CAD thread 7 - Now with 100% more Pastebin!

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>>34745616
Explain this fuckery, you cast it from aluminum? I hope you don't have any pressure-bearing components in that design, or you'll be a glocknade victim.

>>34745652
I didn't make it, though the guy who did does browse /k/.
It's a fucking 10/22 receiver, dude. Even polymer receivers work fine for it.

>>34745652
>pressure bearing
>10/22 receiver
Honestly dude could you take a second and read through your post before pressing post.

>>34745943
... wat?

>>34745616
I kinda like this, but the holes were over reaching his experience

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Reposting my autism from last thread with minor ajustments. Haven't instaled solidworks yet since I am preparing for a trip. When I am back you will all get a proper 3d render to gawk at.

>>34746904
AP variant for use against regular walls and light vehicles (techinicals mostly)

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>>34746912
fuk

>>34746904
you'll have to use a really insensitive explosive on the tip and a way to detonate it Reliably or have it isolated from the propellant with metal and plastic wall

>>34746935
I should have drawn better, but the propelant and explosive don't actually touch. There is metal in the way to keep it from cooking off.

>>34746970
ohh ok, u know about ur stuff thats good. the second one i see no flaws with it.

>>34746992
The second one is, in all fairness, much simpler. But yeah. I also thought about making a hollow point version but I think a 30mm is never going to fly as an antipersonel round. Better to just focus on anti-materiel and anti-armour.

>>34747016
30m anti personal, hahah why not? dont want to evaporate poor bastards?

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>>34747035
>when you need to destroy the torso of an elephant

>>34746925
>>34746904
they already have these in the form of 40mm and 30mm. look into the mark 19's and the Apache's ammunition

>>34747232
That's hardly the point, though. It's a way to educate yourself on a thing that interests you, find out WHY things are made how they are, and maybe even come up with a way to do it that's a little better, while building useful skills.

>>34747232
>>34747311
Both of you are right. I know it's not some revolutionary ammo. I am just using already existing tech to build a new way of doing something old.

It is also meant to be the ammo for a man-portable plataform, not a vehicle. So there is that.

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I want a butterfly knife that works well but doesn't cost $300. I've made knives before but no butterfly knives so I've been messing around with modeling it. Planning on waterjeting the parts.

I like my carbon steels so I was thinking 1095 for the blade. Although maybe I should go with a lower carbon 10-series so that it's a bit tougher.

Any thoughts about the design or materials?

http://i.imgur.com/4kwrAZW.gifv

>americans literally LITERALLY cant make a knife without cnc milling it from a cad file
>americans think a first pass of milling is sufficient to make a sharp and strong edge
L M A O
M
A
O

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>>34747726
Imma waterjet a razor sharp edge on there

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>>34745652
he didn't even need to cast it, they are fine make out of plastic.

>>34747726
Why the fuck do you care

>>34747311
>>34747329
I meant to derive ideas from the ammo, not to dissuade him from trying.

>>34747910
Because he did it last thread and will get a similar response this thread

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Workin

>>34747995
yea boii, extra magazines near are always good.

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>>34747964
>>34747910

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I'm the guy who's started to 3D print a GrabCAD Luger model, barrel finished a little while ago.

I'm super impressed with the abilities of my new printer, a spent 9mm casing fits like a glove and even the rifling is visible.

>>34748029
A post died for this

>>34747995
is that a diopter sight on the back?

also files plz

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>>34748039
TIMESTAMP NOW

>>34748044
no
>
no

>>34748078
ah so a charging handle, strange way to have it.

aw, plan on production then?

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>>34747016
>>34747035
>>34747096
>30mm for anti-personnel/elephant
and here I thought a shoulder-mounted 20mm would be sufficient

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>>34748169

>>34748179
>swedish m11
strange, I thought brazil or SA had made it

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Working on the frame now, I'm pretty sure this one is gonna be an overnighter.

>>34748078
Fuck you, you made me dig up something to write on for no reason

>>34748240
What printer do you have?

>>34747726
OBSESSED

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>>34748240
love you to

>>34748263
Prusa i3 MK2S, thing's amazing. Auto-leveling and calibration makes things so easy, I can just pop a CAD file into the SD card and wait a few hours. It's also amazingly expensive, $699, but worth it.

>>34748240
Fire a primer round

>>34748288
srry bby <3
>>34748365
We'll see, I mean the thing is made from literal corn meme plastic, and instantly ruining what will likely be several days' worth of printing isn't my idea of fun

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Fun fact: Georg Luger initially had trouble creating the first Parabellum pistol prototype, due to the fact that whenever he showed the blueprints to a potential machinist, the machinist's head would explode.

>>34748440
Why not ABS?

>>34747961
Fair enough, I mostly wanted an excuse to restate something from last thread more clearly.

>>34748906
I would have quoted him 5-8k a pistol

>>34748922
Because ABS is a cunt to print, vastly more so than PLA, for little gain IMO. The only thing it's good for is vapor smoothing via acetone, and that's only if you want an organic, sloped piece like a sculpture of some kind.

Regardless of which plastic I print with, I'm still hesitant to start lighting off snap caps in this thing because it's still like a billion years' worth of printing, potentially ruined in an instant. When I get tired of fingerfucking this model, then maybe sure.

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>>34748906
>it's even more complicated than a C96

>>34749157
>he doesn't have an SLS printer

>>34746904
You should look up the patent for a hyper velocity penetrator with fluidised bed propellant.

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>>34747995
>foregrip

>>34749157
>PLA
Enjoy everything you make being fragile and brittle

>>34748240
>high end printer on a bed of filthy bricks and a diapilated room
Why the fuck is this the required set up for home makers?

>>34750753
>>34749157
>PLA
>ABS

these kiddies
not using PEEK on everything, or duratron

Just found out I can legally own a gun up to 19mm in my country, what's the best cartridge up to here that isn't a 50 cal because I'm autistic and want to spend all my money on brass.

Additionally, is there any actual reason for a single shot gun to use rimless cases?
I was thinking that for accuracy's sake a rimmed case would be better because you could have a larger area to headspace with.

>>34750957
Because most anti tank rifles are derived from anti air or heavy machinegun calibers and with modern production it is actually more expensive to mess about with rims because it's harder to reinforce the web.

Also there isn't anything like that because anything above .50 is likely above 19mm or will not be in modern production

>>34751055
Other way around mate.
AT calibers were used in heavy machine guns later.

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>>34750957
Wrong thread for recommendations mate.

Since you guys started to cast things you should visit this channel on youtube there are lectures that will teach you how to cast parts the correct and right way in home conditions.
The guy is retired Navy he has done castings for everything under the sun on multiple foundries across many ships.

Pouring channels,diameters,heat ranges,avoiding pitting and shrinkage everything you need to know.

>https://www.youtube.com/user/sandrammer

some of his videos I suggest you watch them all it has a ton of good stuff.
>https://www.youtube.com/watch?v=0-UOqtsDPxA
>https://www.youtube.com/watch?v=iB23wN34LX8

Should this CAD thread be joined with gunsmith general?

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>>34745616

>>34752398
Why is there always a faggot like you shitting up threads?

>>34752394
You keep asking and no.

>>34747716
look up zen pins (benchmade 51 type) it would negate the need for pressing pins into the blade

>>34752513
also, chech out the usaknifemaker website for bushings, screws, and other small parts

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>>34747995
reroll

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>>34747726
>thinks waterjet cutting of the parts for later fitting, finishing and sharpening is the same as "oh i can totally mill a razor-sharp edge off the bat, ahm amurican i can do all dis shit"

Have you ever, really ever, actually made something with your own two hands? Have you ever actually tried to design something yourself, or just stroke your turgid cock to a Tibetan basketweaving forum and shit on others' work? On a tangentially-related note, how do you like the sandniggers?

>>34747716
Design looks good, a high-carbon blade will be fine, though it might chip with a fine edge and it'll be harder to work. Practice plenty before you put a sharp edge on it. You still have to heat-treat the blade before final sharpening and polishing.

Ream the holes, polish everything and make sure everything is pivoting freely before you make any permanent anchoring.

Do you have the locking tab worked out yet?

>>34748039
Very nice print. Can I get a closeup of the threading?

>>34750957
Depends what for. If you're blowing holes in engine blocks through two cinderblock walls, a 14.5mm like a PTRD would be great.

So what's the purpose?

A single-shot gun will use rimless cases because that's what calibers are popular, so it'll sell better.

Rimmed cartridges can headspace off the rim in some cases, yes, but rimless cases headspace off the case mouth- or shoulder, in the case of bottlenecked rounds. A few headspace off the shoulder and the rim or belt, though those are fairly rare.

Accuracy is mostly a function of receiver rigidity, barrel harmonics, and ammunition consistency from shot to shot. If the bullet takes the same path every time at the same velocity, the bullets are identical, and it's in sync with the barrel's movement so it emerges at the same point with the same path, then the bullet- ignoring wind- will hit the exact same spot. Of course, there are imperfections- hence why a super poorly made rifle with bad ammunition will basically shoot patterns, while a very finely made rifle with match ammunition will (typically) print groups at 100 meters you can cover with a dime.

>>34751488
>Nori snacks
AWWW YEEEEEE

>>34752394
They are related, but distinct.

>>34750875
>not using PETG
>not using nylon

>>34752998
>not using glass filled nylon

>>34753510
>not using extruded molten steel

>>34753799
>Not using selectively laser sintered titanium cobalt alloy

>>34753930
not using super pure, high pressured cooked zirconia

You know, the more I think about it, I think I might skip over making a toggle locked pistol and go straight to a carbine. The design I have in mind is just better suited to it.

>>34748039
I'd buy a polymer luger for the novelty of it

>>34750957
14.5mm

>>34754326
make Pedersen device knockoffs for modern production durr rifles

>>34752037
Oh and this link if you want to create melting furnace that actually works.
>http://kelds.weebly.com/smelteovn.html

>>34752037
If you actually want to make castable shit the right way, just go on Amazon and pick up a copy of Demargos materials and processes in manufacturing, and read the chapter on casting.

It goes through everything on heat treatment, to proper cast design, to placement of runners and sprue.

Though there's not much to it if you're not an idiot.

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>>34754608
The guy is going by this book.
As far as assuming intelligence and acting snarky you can shove it up your ass.

>>34754413
I'd fucking love to, but didn't the U.S. Army destroy almost everything related to the Pedersen device program? Where would you obtain the blueprints from?

Plus the Pedersen device was originally chambered for some weird meme cartridge, to make it sellable you'd have to produce two versions: one in the original oddball caliber for the die hards, and one in some modern rimless pistol cartridge like 9mm.

I'd additionally be curious as to how they'd be regulated, my guess is exactly the same as a complete AR lower, the device itself is the "gun" even though it's meant to function in something else.

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>>34754286
>not fabing ar lowers with cutting boards

>>34754733
>not using 3d printed iconel

>>34754795
>not using sintered copper to make the wrong component and subsequently blowing your hands off

>>34754711
As an afterthought, perhaps we should cook up an email to Ian at Forgotten Weapons and ask him, he'd probably know more about the Pedersen device than anyone else easily reachable.

Which one would theoretically be easier to build, a decent open bolt or closed bolt SMG?
>Open bolt has fixed firing pin, but needs more safeties
>Closed bolt is the opposite, also more accurate

>>34754930
>smg
>accuracy
Ho hum fucking aiming should not be an issue with a two-handed gun that has a proper buttstock to jam into your shoulder, especially since you're not ever going to be shooting past 100m with it because it's a machine pistol ffs
Forget accuracy.

>>34754930
open bolt is far easier to build, even with drop fire safety it's still easier than making the pieces required for hammer or striker firing
you most likely need some form of out of battery safety for a closed bolt

>>34755166
Didn't the AyylmaoTF decide that almost all open-bolt blowback designs are illegal to build because they're "readily convertible" to full auto?

>>34755203
Well yes, I think they are all banned by default, but he asked which one was easier to make not what was legal in US

>>34754711
>make Pedersen device knockoffs for modern production durr rifles
dude you're putting way too much thought into it
Pedersen device was a simple blowback mechanism made to fire slightly hot .32 acp equivalent out of a .308 bore rifle

>>34755166
Thanks.
>>34755203
Hence why I said "theoretically"

>>34755288
I didn't get that you meant "thing that mimics the role that the Pedersen device had", I took it as "reproduction Pedersen device" lmao.

I'm not sure what market it'd fill. Perhaps fun/plinking out of a durr gun you already own so you don't have to buy a full on AR or something, but you'd need to make it cheap enough to where that justifies buying an addition to your rifle rather than a new gun. Plus, the Pedersen design was specifically meant to be dropped into a bolt action rifle with minimal modification to suit the needs of the battlefield. You won't run into the need to quickly switch between ammo types in any other situation, I think. Fun as hell though? Definitely.

Delayed blowback rifles like Pendersen's also required lubricating the cases for proper extraction
Just saying

>>34751260
Yeah, 50 BMG is pretty much the only heavy MG cartridge that was turned into an AT round. The rest are the opposite.

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>>34755426
No, just get fluted chambers for the adapter, G3 / MP5-style.
A problem that was solved 60 years ago by German ingenuity

>>34748039
I think we all know that once you put it in, you have to testfire it.

>>34748345
Fuck, that's out of a prusa?
Very nice setup, I thought it was a sand sinter printer.
It's time to give my old mendel i2 an overhaul apparently.

>>34755506

Rip brass

>>34755726
Very fake news.

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>>34755380
it'd fill the same niche as pistol caliber carbines, you could even get a bigger market if you made the 'chamber' swappable, so you can fire different .308-.311 caliber ammunition out of it- 7.62x25, 32acp, .30 carbine, .32NAA etc

>>34755380
dude its perfect
it appeals to the prepper type
it appeals to the casual plinker
it appeals to the old fudds who insist that they have a pistol and rifle chambered in the same thing eg .45, 44-40 etc
It appeals to poorfags who can't justify buying another entirely separate gun

>>34754685
Didn't realize you were promoting your own YouTube series dipshit.

What, poor enough to cast your own shit, but too poor to afford a 20 dollar book with more information relevant to not just green sand casting, but for everything from aluminum to steel, using everything from green sand lost foam to ceramic?

Not to mention it makes a better reference considering it also goes into the information on why certain things are cast certain ways, more than any welfare queen could, including finishing, heat treatment, alloy selection, mold design, et cetera.

Better than what the Navy wants in a 35 year old fucking manual, written for the casting of specific parts for ships that are cast far more differently than say, oh, gun parts.

>>34748345
>amazingly expensive
>$699

in a world where the /arg/ fags spend 2k on an ar they will never fire and clapped out manual mills are like 5k that seams pretty reasonable.

>>34756345
Pardon me I forgot that its summer.
Neck yourself.

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>>34756464
>>34756345
>>34754685
>>34754608
>>34752037
Regardless of your arguments I'm pretty stoked to start reading about manufacturing processes.

>>34756554
FUCK YOU THERE IS ONLY ONE BOOK REEEEEEEE HOW DARES ANYONE POST ANYTHING ELSE REEEEEEEEEEEE GET DEMARGOS I KNOW EVERYTHIN REEEEEEEEEEEE

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>>34756704
>tfw it IS demargos

>>34756755
>Untitled.png
I remember when I was 14,I loved shitposting on 4cum.

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>>34756768
>being this assblasted about filenames on the internet

>>34749157
>Not using nylon sintering
>Not creating a fully functional Luger with industrial metal sintering

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Externally finished.

>>34757265
sooooo where does your thumb go when you use the foregrip?

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>>34758460
Bump to try and save thread

>>34760745
Hot

>>34760899
She's kind of a butterface. The side laying on the supports printed like absolute garbage, and with GLORIOUS TIGHT TOLERANCE PISTOL OF GEORG LUGER DESIGN it's gonna be a real pain to get all the parts running smoothly.

>>34760953
> GLORIOUS TIGHT TOLERANCE PISTOL OF GEORG LUGER DESIGN
you are obviously flying too close to the sun anon. I applaud you efforts tho. Is the hang up your printer or the model geometry itself?

>>34760745
You should cast it in aluminum

>>34760953
How long did it take to print? Also more pictures

>>34761355
That tie be a special kind of hell with shrinkage.

>>34761704
9 hrs and 41 mins with a frozen dick it looks to me

>>34745652
ruger makes theirs from aluminum ya dipshit

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>>34761929
ruger has slightly better qc than anons garage

>>34762038
you can't prove that

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>>34762081
YEAH HUUH

https://www.youtube.com/watch?v=ZBYw1CT2JiU

(the whole series is good desu)

>>34762125
>a bunch of mustachioed gun dudes sitting in a room in front of CAD workstations making guns
living the dream

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>>34758460

>>34748240
what are you building?

>>34762970
start from the top of the thread and read left to right.

>>34734335

If a patent is expired, then whatever is in the patent is generally considered in public domain, meaning, that anyone should be able to use it. There may be some weird exception to this, but that is the whole idea behind patents: the inventor discloses the invention to the society, and return the society lets him go after infringers for a limited time. Once the time expires, it belongs to the society.

However, you do need to be careful, though: there may be other patents out there. For example, consider the following scenario that often happens in industry: a patent to a widget expired, and in the meantime, the technology has moved along and there is now an improved process of making that widget. If this improved process is covered by a second patent, you will not be able to make the widget by the better and you'd get stuck making the widget the way described in the expired patent. This would put you at a disadvantage over the companies making the widget by the improved process.

With regards to the trademark, you should not sell the product under the original name, but come up with a new name, trade dress, etc.

With regards to copyright, patents are generally not considered copyrightable.

>>34761343
Pretty sure it has to do with the slicer I'm using, in addition to Georg Luger being an absolute madman. There needs to be so many support structures.

>>34761355
Fug Dat

>>34761704
See >>34761903

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PAGE 10 save

>>34764765
Looking good

AR-18 upper adapted to AR-15 lower when
I hate buffer tubes

>>34765947
Why not just replace it with nested springs?

>>34765964
Because I'm also tired of Xzibit memes
>yo dawg

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>>34757265
Making a attachment for the grip

>>34745616
Where's a good place to find technical drawings for steel guns?

>>34767834
Google

>>34765947
Vulcan/Hesse did it

>>34768195
It's nice of you to confirm that nobody did it and that that's still a niche that needs to be filled

>>34768313
Think the Taiwanese ones Wolf is importing largely filled that.

Could you make a sear for an open bolt gun out of 3D printed ABS? I get that it's one of the most critical parts but that stuff is stronger than most realize.

>>34768195
literally the worst rifle Ian ever reviewed.

>>34768541
yes you could. how long do you want it to last? does safety matter to you?

>>34768554
Safety is very important, it needs to last, say, 250 rounds max. I suppose I could just put a metal cover there to prevent wear.

>>34768548
I don't think you've watched enough of his stuff if you think that's the case.

>>34768432
they still utilize the buffer tube

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>>34760745
plz post the stl . . .

>>34768654
Gonna have to second this.

>>34767834
1860 SAA blueprints
https://www.youtube.com/watch?v=G6VywTnlROo&ab_channel=Waffenschmiedinx

Shame they're in a video instead of a pdf though

>>34765969
Those are a treasure of the internet age.

Do you guys think roller delayed would be a good action for a shotgun?

>>34772079
No, you should be looking for something that is less sensitive to ammunition

>>34747716
Making one that doesn't suck ass for under $300 is easy as fuck. It's just a niche market so it's either gas station bullshit or pure luxury items. If the weren't illegal to carry in so many places we would be tripping over $50 Kershaw balisongs

>>34747726
The mark of a good machinist is making a corner that'll take your arm off. You know how people bitch about sharp edges on guns. Yeah

>>34748169
You would think, but this keeps it ambi while allowing for a rail, much like the TMP/SPP/MP9

>>34750476
Do you not see the stock

>>34748906
I'll be honest. I just want a .22 that looks like a Luger without the toggle. It could look the same, but have it work like a regular blowback. The ass end could just be a cap made to look like the back of a Luger

>>34745616
>test fitting with model that is supposed to be 2-3% larger than the final product
>not packing the sand more tightly, using finer grain sand or a rigid plaster cast
>burning the PLA out directly with molten aluminum which will not burn as quickly as foam leaving debris in the cast
>2-3% shrinkage
>tolerances of holes absolutely garbage, surface pitted and mottled
>cast aluminum with no heat treatment
>more work to fix a shitty cast than making one from scratch or using better technique

C'mon... There are better ways to do this. That 22 receiver looks so plain that you could do just as good as a job with sheet metal bent or welded together. If you do want good castings, you have to eliminate as many possibilities for error and deformities as possible. Plaster of Paris is good for lost casting like such because it's very fine and you can burn the model out before pouring metal into the void, reducing residues and debris crapping your part up. If you can use wax filament instead of PLA, you can reclaim it after cooking it out in the oven and further reduce debris in the cast. Even if this part was undersized or shitty, Gunsmithing is not all about correct measurements. So long as parts fit and work together as designed, exact measurements aren't always a concern. Filipino M1911 copies are made from castings, fit and finished with simple hand and machine tools...
My point being, this might be the first time this person has tried this, but there are many things they could improve on in their casting methods and techniques. Just had to let my autism go there, sorry.

>>34772913
Have you ever heard of 'just fucking around'?

>>34745652
the implication of your post is that somehow sand-cast aluminum is unsuitable for this application. given your extensive knowledge of metallurgy and engineering failure modes, it is humbly requested that you enlighten us. share that vast trove of knowledge you have again, and tell us why it wont work.

>iwasonlypretending.jpg
neck yourself, cretin.

>>34772961
Cretinism is a serious condition.

>>34772960
These threads should just die already.

/k/ is only good for a few laughs and /ak/, and chans in total are only good for posting anime sluts and waifus, because the anonymous platform leads to abuse. Constant personal attacks and flamewars. Did this thread have maybe two good posts? Yes. And those were links to YouTube, decidely not this place. If you want off-the-charts mean-spirited sarcasm and unhelpful advice, this is your place. As for me, I better see more anime girls posted soon or I'm getting the fuck out of here.

>>34774050
Why are you in this thread?

>>34774050
You will not be missed.

>>34746904
And how do you plan to make the fuze?

http://www.mediafire.com/file/ubj89gfo5eenjbw/bluePrints1.zip
couple of gun blueprints. may or may not be complete

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>>34745943
God damn
>fetish activated

I may be late to the party but who wants to hear about my multiple ar15s, Liberators, and a fucking VZ61 Skorpion?

I am actually still gathering 10/22 parts as well.

>A short barrel and a wood stock cut off to a pistol grip so it looks like an SBR lol

>>34776569
I'm all ears. I just want to make a brass frame .32acp . Haven't figured out what to base it on yet, but I think the Beretta 70s look about right. Maybe a 1903

>>34776569
Is it CAD related?

>>34776665
It base it off a .380 so you have the softest recoil impulse possible
and use steel pin holes

Are there any 20rd or 30rd .380/9x18 magazines?

>>34768654
>>34769697
https://grabcad.com/library/pistol-p08-luger

Glorious peestol of georg luger design

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Anyone willing to potentially ruin their shotgun barrel to test this for me?

>>34777926
Yes

Link plz

>>34777943
I have to print this. I also need to buy 4-gauge nails, but don't see a point in affixing the expensive-ass carbide core until later. Might need to use an equivalent mass of lead to ensure similar aerodynamics.

>>34777957
Link plz

>>34777977
What format do you want it in hommie?

>>34778011
.sldprt
.sldasm

>>34777957
Send me a couple and I'll case harden them myself/ shoot them, not going to be loading them super hot though I like my shotty.

>>34777308
Skorpion and M-11 mags

>>34778085
https://www.dropbox.com/sh/sqyp1wp93abfrha/AABF9K2GQOngsGNeJp8eBcU-a?dl=0

Can't export to .sldprt because Inventor is ghey, but I've got them in .stl and .step versions, hopefully you can import one of those into your CAD of choice.

>>34778190
Do you have a 3D printer? If you do, all you need are the files and a set of 4-gauge nails.

>>34778271
Didn't read fully, no printer.

Might still try and make something out of lost wax though and aluminium. I feel the balence is more important than the guns but that's up to science

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>>34777873
much obliged

>>34776804
Have you seen the videos of the Rex zero1 .32acp? It's like a BB gun, I love it. Also while digging around for super simple mouse guns I found out the the Kevin ZP98 (micro desert eagle) had a 9x18 Makarov version. Shooting the .380 already sucks dick but it's still neat

How can I start getting into this kind of thing?

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After a lot of fucking around in the Fusion 360 sculpting tools I finally have what I consider a decent attempt at an ergo grip for my VZ58. Probably going to mill it out of wood on my cnc router soon.

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>>34778491
read the Good Book. you need to know how to make stuff if you want to design stuff. Or else you'll design stuff that you can't make.

>>34778668
Nice. I'd love slightly upsized, but still proportional, versions of VZ and AK furniture to fit non-midgets.

>>34777873
Dude, you fucking rock, how much is printed so far?

>>34778903
This I am aroused

>>34778863
The base .step file is here if you or anyone else wants to take a crack at a custom VZ grip. Just make sure to keep that lip at the top of the model so it can align with the receiver properly.

https://www.thingiverse.com/thing:2448305

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>>34778903
>>34778939
So far:

Receiver, frame, all components of magazine though the mag is very fragile and not good for printing, the bolt, firing pin, extractor claw, ejector arm though that doesn't work well either, the toggle, safety, and lastly the barrel though the threads are out of spec and I need to print a new one.

>>34779272
Thanks for this. im gonna have to cast an aluminum grip now.

>>34779618
What are you doing for springs? Also, you are my hero right now

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>>34779618
This is the future i was promised

>>34780058
I've considered casting a grip out of aluminum, but I don't have the equipment or the space to do that. Let me know how well it goes on the Thingiverse page if/when you do it.

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>>34780125
Well, I *tried* to print a spring, and this is the result. If I enable supports in my slicer, it'll probably come out better, but removing them is a pain and I would rather print other parts first. I have metal springs anyways that work just fine.

>>34780198
Danke, Kumpel

>>34779618
What are you printing in (material)? I'm new to these threads. What is this.

>>34780789
PLA. Considering the detail I'm printing in thanks to Georg Luger's Kraut space magic, I don't want to fuck around getting something like ABS to behave while I'm printing.

>>34780677
I kinda figured you'd go actual gun springs for it, are you worried about spring pressure breaking small parts?

I really want to print a USP now

Do you like your I3? I'm considering buying one next week, not keen on a lot of the cheaper printers

>>34780451
Will do. If u get bored enough I was trying to replace the upper handguard with something that could attach a rail to it. My printer only does pla so just the print could not take the heat from firing. But casting may suffice if i had a model that wasnt designed in sketchup. If you feel up to the challenge I definitely would appreciate it.

>>34780899
Already planning on modeling the handguards. My end-goal is to be able to make all of the furniture out of wood on my cnc router to replace the ugly beaver-barf furniture and maybe sell wooden furniture if everything goes as planned.

>>34780886
I don't have proper springs for the Luger and desu the assorted springs I have right noway work just fine.

Regarding the Prusa i3, do it. Vastly better that those shit Chinese printers that cost $100. The 7 week lead time is a painful wait, but it's worth the wait and the money. Auto calibration is great, I can just fire-and-forget whenever I want to print and I'll always come back to a finished part.

Longest print thus far is an overnight 9hrs 41mins on the Luger frame, and she took it like a champ, no issues at all.

>>34745616
i came into this thread thinking it was canada general and i was very confused for at least 10 minutes

>>34781350
3D print a luger and take over your parliament

>>34778271
Thanks anon.

7 threads deep and your the only anon to share files besides me.

>sees this thread
>goes to look up how to get solidworks
>stupid fucking torrenting and install procedure and apparently the devs track you if you use it while online
>lots of math
>literally have mental disabilities that makes it absurdly hard to do basic algebra

i g-guess i'll just go back to scribbling on pencil and paper and rough mock ups in Paint.
speaking of which how do some of the gun design gurus here think my trigger mechanism internals looks. i just cloned a SMLE trigger, extensively reshaped it, and put in a rudimentary disconnector so it can go pew pew pew instead of pew *dead trigger, recock striker*

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>>34782587
thanks 4chins for deleting my fucking attachment, preciate it

>>34782587
>cant turn wifi off.

>>34782925
man you have no idea how much i multitask

>>34782606
lrn 2 drw

>>34782947
>"scribbling on pencil and paper and rough mock ups in Paint."
Not him but reading is an important life skill, anon.

>>34782960
>reading is an important life skill

So is learning how to draw a coherent image.

>>34782960
dat woos a jok3
bee>>34782972

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>>34747995
Is that a fucking CBJ?

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>>34783082
Yep, just a little bit more to do.

>>34778840
Will it teach me how to reverse engineer a magazine?

>>34783317
Once you read the whole thing, yes. It would even tell you how to design your own.

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>>34783339
I believe you

>>34783352
>stamping, guidelines of reliable feeding of under either gravity it or spring load, the proper spring tension for x weight and the angles for the feed lips, the material of spring needed, the material of the sheet metal the stampings are made from, the flow once stamping are made, how to properally spot weld everything, the way the metal shifts when spot welded, if you can join the magazine by tabs, how to lay out the tabs so they interlock securely, how to heat treat said steel without significant deformation. Etc. Etc. Etc

Magazines have been hell to get right for decades for a reason you fucking newfag, how about you read the book instead of smugly shitposting, you most likley wont though and your enture life will boil down to that.

>>34782587
get sketchup dummy. or fusion 360 with a ((((((((student))))))))) license

>>34781740
A muzzie tried that a couple years ago, if you recall. It didn't work out very well for him.

>>34782587
>literally have mental disabilities that makes it absurdly hard to do basic algebra
CAD makes it a hell of a lot easier, desu. It does most of the work for you.

>>34781350
>.79 USD General

>>34783375
ThanksM8

>>34784524
Sketchup a shit

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Bump

>>34784524
You don't even need a student's license for Fusion, just an enthusiast one. Still free too.

>>34786856
fookin why mate, you still havent told me whether you intend to make it or not.

>>34788156
Whether he intends to manufacture it or not is irrelevant.

>>34788219
I want one, so if I have to make one myself or buy one is important.

>>34778840
Is the 29th as good?

>>34788292
Very little changes from one edition to the next.

>autism in my spare time bump

>>34762125
>oh neat a ruger how it's made
>0:28 seconds in

why did they play this in reverse

>>34791634
Sweet, thanks man

>>34791665
Cool beans

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>mfw about to get my 3D printer
CUMMING

>>34795325
Whatcha getting?

I wanna get one, I suppose I'll get this Prusa i3 that seems to be all the rage.

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Update on the Luger, meine Freunde:

She extracts reliably now. The trigger mech is ungodly complicated, and not well-suited to plastic, especially when many of the parts are their own springs. I'll forge onwards...

>>34795943
Nice!

>>34795943
What sort of printer do you use?

>>34795971
Danke Kumpel

>>34795975
Prusa i3 MK2S. Don't accept Asian substitues: buy Czech (tm).

>>34795359
I'd wait until a chin company clones it for half the price and the same components

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>>34788156
Yes.

old pic

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>>34795359
D-Bot
Fancy as fuck

>>34797025
do you recommend it?
how much is it?

>>34797615
https://www.aliexpress.com/store/product/D-Bot-Core-XY-3D-Printer-V-Slot-Rails-Mini-V-Wheel-kit-Combo/123598_32781664494.html

>>34797950
dang that's cheap.

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>>34797950
>mfw I'm actually building this from scratch
locally sourced
>price point 400+ €urones
I shoulda waited for the chinkshit kit
Then again most of my parts seem to be more premium, those leadscrew nuts look absolutely garbage

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>>34798202
>>34797960
>>34797950
Oh hold on, this is just a mechanical kit, it doesn't actually include the electronics. Then I actually got off cheaper, HAH

good mech CAD for macOS? Is there any? (No, I don't care about your opinion of macOS, I just want to know if there is a good CAD for it)

>>34798281
parallels and SW
bootcamp and SW
WINE and SW
...etc.

Or if you want to be dumb go with fusion

>>34798219
I'll get you off real cheap bby.

Also post build list

>>34798281
macOS is shit

try solidworks you apple drone

>>34798326
https://www.thingiverse.com/thing:1001065
Everythign else I pieced together from the BoM and Aliexpress piece by piece. That always saves you a hundred bucks or so.

>>34798393
how is Aliexpress?

>>34798446
It's Chink ebay with a bulletproof returns policy. When the vendor jews you, the site pays for him. I trust it.

>>34798464
that's pretty neat-o

>>34778840

related question: got any good books for designing pressure vessels/structural engineering? Asking for a friend who won't do anything illegal or bad with that information

>>34798962
go away Tsarnaev

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>>34798281
>apple products
>cad

>>34798281
pirate NX, there's a Mac version

>>34799793
10 internetbux says he's one'a them artsy fartsy kinds

>>34800261
Thanks, I missed that one. I'd really like to avoid using windows if possible. Well, if this doesn't work I'll just go with Linux/VariCAD or something.

>>34800650
There's also FreeCAD

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3D printerfag here again, with a link to a 7.92x57mm cartridge if you want it. I did this using the original drawings written in German, so hopefully they'll be as accurate as they can get.

https://www.dropbox.com/s/yk81b8x8oxm93n7/7.92x57mmCartridge.stl?dl=0

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Speaking of the original German drawings, I have a really stupid idea that I thought up while sketching this up.

Could you practically create a bullet jacket with a 3D printer? Copper is used as a jacketing material because it won't deform when feeding like a lead bullet, but 3D printed plastic could theoretically serve the same purpose, while also allowing the user to create practically any bullet dimension they want.

Pouring molten lead, with a melting point of 327 C, is a bad idea considering PLA's temp usually runs about 215 C. However, it handles thermal flux well, so you could get around damaging the jacket by surrounding it with ice or something.

Yeah, it's probably a dumbass idea that has something wrong with it, but I want to hear what you guys think.

>>34798281
>good mech CAD for macOS?

Doesn't exist.

>>34778085
pls make a video of you shooting this anon it should be interesting

>>34801401
How do you read these numbers ? Is it 8.15 mm?

>>34752680
I'm probably going to outsource that part. Just a couple bucks.

http://butterflyknifekits.com/

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>>34752680
Thanks for the advice too, I'll be sure to polish it up.

<-this part is $0.99

>>34772736
You do know the Ruger Mk. II/III is a thing, don't you?

>>34801401
You could try ice around the plastic, but why not pour the lead into a mold, then go to another mold to pour plastic over the core? You have plastic driving bands on 30mm ammunition, so this seems reasonable to me.

>>34801905
Yes, Europeans are retards and use commas instead of decimal points. Nobody knows why they do this, which is inefficient compared to using a simple dot.

great, POS is here to shit up the CAD thread

>/k/ is better at 3d than /3/
As an old /3/ regular and this is completely unsurprising.

>>34748039
so do you guys design/print anything besides models? im just curious, id like to contribute because it looks fun.
what do i need as a basis, will any 3d modeler do or should i go through getting solidworks?

>>34802972
>solidworks
yes, pirate it and learn tutorials on jewtube

>>34802460
>You could try ice around the plastic
uh, yeah that'll go well. Ice and molten metal will go great. go ahead and try it, report back when you do.

>>34802864
At CAD, not organics.

>>34795943
I am erect.

Video of frane on slide when? Have you printed grips?

>>34803257
Yes for the grips, though I keep them off so I can get at the internals. I have also printed the frame, the main issue I'm having is that the magazine is too out of tolerance to fit + too weak to be sanded down. Also the L-shaped bracket connecting the mainspring to the toggle is too weak as of now, and needs to be reinforced in CAD.

>>34802460
The idea is to avoid needing a mould altogether, because you just print the outer diameter jacket and be done with it, the plastic giving the aerodynamics and the lead giving the mass. I suppose you could roughly hammer a chunk of lead into the right shape then just press fit it into the jacket.

>>34803328
Why not print or carve a core out of heavy material then print a jacket around it?

Also, seems kinda wasted instead of just casting a lead bullet, which will preform better and be tougher.

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>>34803356
The idea is that you could use them to create a material less likely to deform when feeding. I can't imagine a wholly lead bullet being used in something like an AR-15, it could definitely increase jams. In addition, you could make whatever meme caliber you wanted, provided you get the spitzer point right and it doesn't keyhole.

Also, behold the glory of 3D printed 7.92x57mm dummy rounds.

Fixed up the CAD thread OP a bit, then I got fairly lazy.

https://pastebin.com/MrPB1P1w

>>34803235
I'd put money down that /k/ would be better at just about everything.

>>34803732
except actually shooting guns. /k/ doesnt know shit about shooting fundamentals. Its that weird kind of never leave the basement/cave/shop/3dfablab autism

>>34803920
I meant 3D related. TBQHFAM I'm not the best marksman either, but I do okay. I imagine most on /k/ are probably similar. Could hit a deer at reasonable range, but not competition quality.

>>34803920
Every time I go shooting with /k/ folk they are amazed I can hit things with a pistol. It's weird to me.

>>34804832
...I need to practice with pistols more

so i downloaded solidworks and it appears to be working. whats the next step? watch videos and shit until i can make shapes?

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Hey friends, does anyone know how to get dimensions from .obj files?
t. Solidworks 2015 with no "scan 3d model" add in.

>>34804933
>he isn't already working with CAD either in his career or as a hobby
shiggy t. diggy

>>34804933
Download something better

>>34804984
this
get autocad
>>34804933
>>34804933

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>>34804948
I figured it out
disregard

>>34804832
I plink at clay pigeons at 50-100yds with my USP and .38 revolvers, it blows their minds.

>>34805043
I haven't got a range that big or enough ammo to get that good, but I feel like soda cans at 10-20 yards shouldn't be a remarkable feat of accuracy.

>>34805056
I'd say that's very reasonable to expect, I'd still give a good job for hitting that reliably, but unless you're a nrand new shooter I'd expect it.

Then again, 90% of the people at the range probably couldn't do it

>>34804933
There are also some basic tutorials built into the application. It's one of the buttons on the little bar on the far right of the screen.

>>34804992
AutoCAD is shit and the only people who would chose it over solid works are retarded 50 y/o's who are incapable of learning anything new. AutoCAD was hot shit in the 80's. Are we still in the 80's?

>>34805088
lel

>>34804958
>>34804984
>>34804992
i thought solidworks was the standard? whats different between it and autocad.
im just a hobbyist, i dont ever plan to do this for a living.

>>34805088
thanks man, i found them after clicking around for a while.

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>>34804958
>tfw when you spend 8hrs at work computer modelings and are beat to shit and worn out and come home a begin doing more modeling to relax

>>34805155
>whats different between it and autocad.
Autocad is shit, I was just kidding because solidworks is pretty widespread.

the big 3 use shit like CATIA if I'm not mistaken

>>34805162
Yes I know this feel.
I am also a white guy from pennsylvania.
I think German autism is genetic.

>>34805088
>AutoCAD is shit and the only people who would chose it over solid works are retarded 50 y/o's

and those retards are running the company and wondering why they need to buy new software licenses BECOUZE ANON WE DID EVERYTHING IN CAD IN MY DAY WE DONT NEED NEW SOFTWARE. NOW GET BACK TO UNFUCKING THIS 300 LAYER FILE FROM 2006 WITH 50 BROKEN UNINTELLIGIBLE XREFS. Fucking small businesses legacy software bullshit

>>34805155
Solidworks and AutoCAD use fundamentally different modeling systems.

AutoCAD uses what's known as "dumb solids", whereas Solidworks uses sketch-based parametric modeling.

Let's say you make a 4x4x.5" plate with a hole .5" away from each corner. In AutoCAD, each part of the geometry is independent of every other part, whereas in Solidworks you can create relationships between lines, arcs and whatnot.
So if you later need to, say, turn it into a 5x5x1" plate with holes .5" away from the corners, in AutoCAD you would need to manually change the dimensions for the square and then manually move the circles for the holes. In Solidworks, if you set the width and height of the square as equal, you only need to change the dimension of one of them and if you set up the holes to be .5" away from the edge, they will automatically move to the new positions that meet all their parametric requirements. This makes iterating on a design much faster.
It is also much more powerful when it comes to assemblies and drawings (FUCK YOU AUTOCAD AND YOUR FUCKING VIEWSPACES!), but that's a whole 'nother rant.

>>34805193
>They want you to do sheet metal work in AutoCAD
Just put a bullet in my head, senpai.

>>34748345
wait wait wait, $699 for a metal printer that accepts CAD files?

Yes, I'm new to these threads but not to drawing, by the way. is there a waitlist for these?

>>34805209
>metal printer
metal is 3D but 3D is not always metal
squares and rectangles

>>34805206
so autocad is basically a 3d photoshop? given your example i can see why solidworks would be much easier to work in.

>>34805208
RIP onii-chan

New thread: >>34805226

>>34805085
Thanks, it takes a few hundred rounds to stop the flinch and jerk reflexes and now that the thread is in autosage I'm not worried about killing it by replying.

>>34797950
>>34797615
>>34797025
Spend the extra bit on an enclosed machine or make one after the fact. ambient air in the room can really fuck up your prints depending on the material

>>347982
>assmad Macfag can't use CAD on his $2000 facebook machine and gets all defensive because he knows the purchase was just a bandwagon impulse

>>34805228
photoshop is much more useful than autocad. Autocad isnt particularly good at anything but for a long time it was basically the only game in town so everyone know how to use it. IIRC autocad, which I dont even think was autodesk software at that point, was from the mid 80s or something. Its basically legacy software that has had so many patches and new additions added that its bloated outdated junk, but it can still function and do what it was originally intended to do (i.e. replicate hand drafting).

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>>34805339
IIRC, it STILL has legacy code for the old digitizers, light pens and the like.

>>34805395
Oh fuck, please tell me that the light pens and pads aren't worth anything, my uncle found a bunch if 'computer junk' in a shed he was clearing out last month from a tenant that absconded from his rent and I told him I didn't recognize it so he junked it

>>34805456
Maybe to old computer hardware collectors. Not sure how much.

https://www.youtube.com/watch?v=87tiT16BZf0

>>34805208
>have explained k-factors to customers multiple times so they can get better at drawing and spend less on me redoing their work
>half of them don't believe it makes a difference

>>34805865
And then they end up with shit parts that don't match up with the drawing at all.
I had to explain to someone why the bend radius was important. It turns out they had been bending sheet metal for 20 some odd years and never figured to actually read about sheet metal, so they just had their blanks come out short every time.

>>34805883
And of course it's your fault it comes out short when they just gave you a flat pattern with bend lines to begin with.

Good times.

>>34805967
>He doesn't bend the laws of physics to make accurate sheet metal parts!
>Laughing project managers