CAD thread 6 - Yoshitomo Imura Edition

>>34712375
Looks fucking spiff as shit, m8. Can't wait for you to start cutting it down.

>>34712375
Could one of these be milled on a cnc?

>>34712397
Not cost effective for large or small scale production using modern manufacturing techniques. If you want one, buy an original one.

>>34712389
Danke. Working off these old drawings is difficult.

>>34711639
Oh look LARP General. These threads give /arg/ and /gq/ a run for their money, for worst threads popping up in /k/. Engineering students are worse than vegans

>>34712489
>tfw to intelligent to hide threads

>>34712489
You're more than welcome to hide the threads if you don't like them.

>>34712526
>>34712530
Hidemind

>>34712530
>>34712526
You're more than welcome to go to /diy/ or r/lookatmeigotoschoollforengineering

>>34712579
/diy/ has a no-weapons policy.
/3/ is not for the kind of modeling discussed in these threads.
>r/lookatmeigotoschoollforengineering
Many of the posters in these threads already ARE Engineers or Tradesmen. You're just coming off as being salty for your own inadequacies.

>>34712413
are you using these?
http://www.weaponeer.net/uploads/files/28676/EA8D9_P08_Blueprints.pdf

I am also sketching up the Luger for the same reason as you, because you keep posting pictures and making it look so nice.

>>34712630
Yeah, those look the same. I got mine from some guy who posted them in a previous thread, though.

>>34712489
Fuck off /pol/. You don't even know what the acronym stands for, and nobody started using it until you did to yell at /x/fags and """kekistanis""".
>LARPing is doing anything I don't like whether it's actually live action role playing or not
>t. /pol/lack

>>34712489
>Engineering students

>>34712489
>I couldn't into math so now I throw tantrums when people mention AutoCAD and Solidworks

>>34712489
Someone is very triggered that they can't make any gun they want.

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I am making a concept for a gun that uses a p90 style magazine. Should the 90 degree rotation of the bullet be done in the magazine or in the gun?
P.S. Don't ask how it works

Magazine rotates bullet
PROS
>Gun action is less complex
>Possibly more reliable
>Gun is lighter weight

CONS
>Magazine is more complex
>Magazines weigh more
>Carrying many mags might have more weight than gun rotation mechanism
>Mags will be awkward to store in pouch vest

Thoughts on this?

>>34714778
How would you feed cartridges into the turner mechanism in the gun? The feed lips would also have to be in the gun, but you would still require some kind of system to keep the cartridges in the magazine for when it is not attached to the gun (Madsen style spring maybe?).

Just copying the P90 design would probably be the best way to go.

>>34715028
I feel like it should be possible to make the recoil impulse rotate the shell in a simple, reliable fashion. That seems way more reliable than a wonky magazine setup, to me.

>>34714778
Helical is probably easier.

>>34715028
I said don't ask how it works. Just off the top of my head, some kind of feed pawl would work.
>>34715259
What's easy about designing a screw to feed the ammo?

>>34715291
It's easier than designing a box mag that tapers off to single-feed to rotate the round 90 degrees fast and reliably enough to function in a semi-auto.

>>34712489
Let me translate this post

"Stop doing something that is positive! Why can't you be a do nothing loser like me!"

>>34712489
Sounds like someone didn't get accepted to engineering school.

>>34709954
Drilling into a J-shape extrusion that was saw-cut by the customer that I then had to figure out how to clamp so I could drill the bolt hole pattern customer wanted while holding his +/-0.005" hole position tolerance ON FUCKING SAW CUT. Long story short, the nig-rig required parallels to support the J-shape against the vise and it could only then be clamped from the top, so I had to avoid clamps while drilling the pattern.

They should have just sent us the fucking extrusions whole, or toleranced it properly.

>>34712489
I agree, its very cringeworthy

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>>34714778

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https://www.google.com/patents/US2624241
https://www.google.com/patents/US2773325
https://www.google.com/patents/US2882635
https://www.google.com/patents/US3064382

>>34716005
>>34716015
>>34716027
>>34716039
>a more expensive Mac 10
Neat idea but clearly not viable

>>34716086
>a more ghetto macguyverable P90
inflame your ambition

>>34716076
>Putting the feed on the front of the rifle
Y tho.

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>>34716118

Fixed it for you.

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how does sweep cut work?

>>34716199
>lofted cut

This is the thing you have to learn how to use

I'm OK at simple ones, but I desperately need to get better at using multiple curve lofted cuts.

This would get the geometry I think you're going for.

>>34716199
Sweep works by actually selecting the sweep function. Right now you're telling it to loft from one profile to another non-existent profile along a guide curve.

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>>34716373
Ohh thanks

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>>34716373
I meant lofted cut

>>34712651
are yours any more legible I'm having hard time deciphering some of these measurements

>>34711639
Googled Imura revolver, found this thing:
imgur.com/a/HZEm5
>3D printed .38 DA revolvers will be a reality in your lifetime
Feels good. Too bad they're so bulky though.

>>34716199
>how does sweep cut work?

Not reliably. It tends to leave slivers of material that can cause errors when you try to do a flush surface in the sketch. Try this instead.

1) Do a loft instead of a loft cut. Don't merge the feature.
2) Use the Surface Move feature to slightly bump out the surfaces that should be flush/coplanar.
3) Use the Combine feature to delete your new body from the main body.

Wait

Is this a thread for aspiring gun designers to share thoughts on AutoCAD blueprints?

Cause if so I would lvoe for you to point me towards a tutorial so I put my autistic fantasies on paper and maybe patent it for the keks.

>>34717626
yes this is a thread for that, aspiring designers, learning fellas and some autistic engineers like me.

On tutorials to use cad programs there are plenty, chose a program and learn to use it. if ur talking about tutorials about gun design, there are not much of those, the sticky is a good place to start learning all about gun functioning.

im pretty good with material selection so if u want some guidance with that i can help ya.

>>34717693
Just tell me what the most used CAD program is and I will find my way from there. I downloaded AutoCAD once but it was a 2d only thing, I belive it was the version meant for building design.

I wanna start the design of my gun by first making the ammo. It is a preeeeetty autistic idea, but I could be onto something. I think I can design the bulet much faster and once people see it they will understand what I am trying to design.

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>>34717626
yes

also am I reading this right?

>>34717831
>I think I can design the bulet much faster and once people see it they will understand what I am trying to design
I laughed

>>34717865
>caliper to four digits
LOL

From the pic it's right around 0.864 depending on the angle (it matters when you're looking at a vernier scale, it has to be from dead on and not at a slight angle).

>>34717866
Belive me mang, once you see my ammo idea you will go "On no you autistic fuck are you really trying to do that?"

>>34717831
well solidworks is used a lot for mechanical design, it is not exactly the best for everything but is like a jack of all trades and pretty popular, at least in my opinion. (is the one i use)

And hey if u want some pointer on ammo design i also have read i shitload on the theme, a lot of chemical properties and energetic compounds, hell ill even share this PDF with u i hope it helps.

http://chemistry-chemists.com/chemister/Warning/Explosives/organic-chemistry-of-explosives2007.pdf

>>34717931
I'm already going "oh no you autistic fuck" and then I'll laugh harder.

>>34717982
Nice! Thanks. This will really help.

>>34717990
In that case you may end up with your sides in orbit when you see it. Just wish me luck.

>>34718018
Draw it on a napkin, maybe I can give you a pointer aside from the friendly ribbing and chuckles I've been giving you so far.

>>34712402
Like as a one-off copy for an individual though. I don't really care about mass production.

>>34718076
hhmmm maybe u can make if u know how and have free access to tools and machinery and cheap materials. it is hard and time consuming but u could do it cheaply, if not better buy one

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>>34718047
MS Paint is better. I colour coded the parts for easier understanding.

Do I classify as ultimate autism already?

>>34718207
u planning on fucking up tanks?

just some quick questions if u have no problem with it. the solid propellant (green) is more like rocket fuel as in it burns slowly in air?

to make it feasible the blue explosive must detonate outside of the cannon

>>34718207
It just screams of expensive on top of expensive over already expensive gyrojet.

Then consider how failure of one part or another would likely cause your gun to spontaneously disassemble itself and decorate the backside of your face.

>>34718271
>u planning on fucking up tanks?

Yes. This is anti-armour and anti-materiel.

>the solid propellant (green) is more like rocket fuel as in it burns slowly in air?

Yes. It is inside a container and it burns like a rocket. It's pretty much a gyrojet, with a powder charge behind it do give it a kick so it comes out of the barrel with enough speed to do something.

>to make it feasible the blue explosive must detonate outside of the cannon

Yes. That is meant to detonate on impact. The titanium tip makes a dent on the armour and the explosive propels super high speed molten coper through it.

>>34718284
I know how autistic it looks. I am looking at it as mostly a hobby to teach myself how to design machinery and understand how R&D works.

>>34718339
ok man i get ur idea it is not bad, although let me tell and im not discouraging you or anything but something like that already exists and is called pg-7v anti tank hollow charge rocket. maybe u can get some ideas from that.

good luck fella

>>34718430
I know similar exist. But my idea is to have it come from a handheld gun.

I will be looking at that pg-7v though. See what their designers did and how I can use it to improve my idea.

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>>34717013
It can be hard to read.

>>34717626
>AutoCAD
Avoid unless you travel back in time to the 1980's.
Learn parametric sketch-based 3D modeling.

>>34718076
You will need to manufacture many jigs to machine it properly. My long-term goal with this project is to make a more modern toggle-locked firearm specifically to address these issues.

>>34718339
>Yes. That is meant to detonate on impact.
Look at how it has been done in the past and learn from it.

http://www.theakforum.net/forums/19-ammunition-reloading/175971-comparison-ww2-7-62x54-8mm-exploding-ammo-2.html

>>34718792
How low can you get the bore axis?

>>34718798
Oh that is a spicy link. I will read it.

>>34718817
I can't answer technical questions on a model that I haven't even begun working on. I'm still piecing it together in my head as I work on the P08 model.

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>>34718839
I get it. Just can imagine being able to get it insanely low because you don't need to worry about a slide moving back and forth. Give those weirdos who choke up high enough to get a manicure from their slide something to chew on

>>34717169
Frankly revolvers aren't ideal for a 3D printed pistol. Too bulky and require multiple strong lengths of pipe. Something with a manually cycled bolt would be ideal, with a double stack mag and only one pipe for the barrel.

>>34718874
Regardless of which direction I take the design, it's going to be a weird, niche product anyway, so I might as well make it an interesting oddity.

>>34718838
You may also be interested in this video:
https://www.youtube.com/watch?v=AXaaybiRiYY

It takes a while for them to dial-in the test parameters, but it really does illustrate how DEVASTATING even that small a powder charge is.

>>34719306
This makes me more confident on my design. Shows that the bulet doesnt have to carry huge amounts of explosive to be effective.

I think I can have a propper blueprint in a month or 6 weeks. I will be happy to share it with you all when it's done.

>>34718764
What software should I use then? Just give me a name and I will search myself.

>>34717865
Buy a digi caliper or a dial, so much fucking easier than that.

Nobody but old fucks use vernier and they can be told to fuck off

>>34719513
solidworks

>>34719539
>solidworks
Thx will look it up

>cnc mill I am looking at is 20k tooling included
>includes 4th axis, vise, power drawbar, and various collets and holders
>bank loan' s interest is like 15% for personal loan
Woe is me

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Looks like I may need to have a custom leaf spring made for my C96. Does anyone know how to correctly specify spring tempers?

>>34719513
Solidworks.

>>34719644
Other than the color test you can try buying a scratch hardness tester.

Maybe make a bluing tray to help keep it consistent https://youtu.be/8h1Uf9bkc3E

>>34719616
Depending on age, where you live and other factors, you could get a government subsidy.

>>34719616
>>34719674
Hell, the equipment may even be partially tax deductible.

>>34719674
>>34719698
24/ SE US/ brand new equipment (Tormach 1100)

I just want something I can use to do small odd jobs and prototyping.

What I'll probably do is wait until I get my own place and then contact Tormach about financing.

>>34719767
I'd suggest contacting an accountant ASAP. Your local community planner may also be of help in acquiring funding.

>>34719795
>I'd suggest contacting an accountant ASAP. Your local community planner may also be of help in acquiring funding.
What can they do? get me a grant or something? I know the accountant might be able to find me tax breaks but a community planner?

>>34719817
You'd be surprised. If it brings more money into the area and/or creates jobs, there could be stuff at that level of government. Though I could just be using the wrong term through mistranslation...

>>34719890
just a quick search yields some fruit.

>Section 179 of the IRS tax code allows businesses to deduct the full purchase price of qualifying equipment and/or software purchased or financed during the tax year instead of capitalizing and depreciating assets over the year. That means that if you buy (or lease) a piece of qualifying equipment, you can deduct the FULL PURCHASE PRICE from your gross income.

>make a small business llc
>buy the machine under the business
>apply tax break
>machine goes from $20000 to $7000
oh yeah, gonna buy that shit ASAP.

>>34720118
Nice nice nice.

>>34717013
So, what've you got so far?

>>34719674
Explain how I can get government money to buy a CNC pls

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Sorry to interrupt your tax rebutals but I need solidworks help

How to caming track?

I made this crude thing in openscad and was easy using hulls and solid difference but I don't know how to do that on SW or how to even search for this.

>>34723077
swept cut on a helical path

>>34723077
CNC fags don't know how good they have it.
I need to setup my manual mill and dividing head for helical milling. It will probably take a day or two to figure out what I need, buy parts, and set it up.
All to make short little cam slot.
https://www.youtube.com/watch?v=Srl0w55kY14

>>34723143
thanks, gonna look for that

>>34721029
At work rn, I only have the barrel and sight finished so not much.

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From previous thread

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>>34724086
working on another ballistic knife.

>>34724086
is it a stab assisted knife that uses recoil from a 9mm to help you penetrate hard things with the blade?

>>34724086
Why?

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>>34724086
Can a nigga get some dimensioned drawings

>>34724114
>>34724122
shut up bitches

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>>34724086

scout knife with a surprise...you a spetsnaz?

>>34722705
Contact a reputable accountant in your area. They should know what subsidies and tax write-offs are available to you.

>>34723077
My experience with the cam function in solidworks is admittedly limited, but as I recall you need to make the cam surface a single entity, usually accomplished by using splines. As for a cam on the side of a cylinder like that, I'm not sure how SolidWorks will act since I've never attempted it.

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>>34723077
>>34724345 (cont.)
Actually, if you're planning on milling that on a 4 axis CNC, then you want the projection to be perpendicular to the centerline. For that, what you'll want to do is wrap-deboss.

>>34723364
Cool, cool. I'm curious if you'll stumble in the same places I did/am.

>>34723207
It would have really helped if that video had a picture of what he was trying to make first. Once I saw it in action it all made sense, but contextless math just goes in one year and out the other.

>>34724237
>anime_girl_brunette_knife_spirit_20364_3840x2400.jpg
>anime_girl_brunette
sad!

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>>34724237
>Can a nigga get some dimensioned drawings

roll your own

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Why wont it mirror>>34724463

>>34719513
Siemens NX.

>>34724493
Don't mirror faces. Mirror features.

>>34724237
>anime
>needing precise ((("""BLUEPRINTZ"""))) to understand a very basic design of knife

why are americans so devoid of creativity or intuition? serious question, there seems to be a very basic need almost to an autistic level for very rigid and specific plans for anything

see also: "adult coloring books", "infographics", beer/wine brewing kits, software that is mostly based on other software (Unity Asset Store, UE4 Blueprints, visual scripting), kit lists of specific brands/models of item to "EDC", etc

seriously, why are americans so unable to come up with their own designs or use local materials, as opposed to looking for autistic infographics and ordering the same one Casio watch off of Amazon?

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>>34724534
No good, also it wont let me select all the features

>>34724564
Could you show me your feature tree real quick?
You might have to break it down into a couple steps.

>>34724562
>>/pol/

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>>34724564
good luck

>>34724575
ITS JUST A FUCKING KNIFE

THERE ARENT EVEN MOVING PARTS IN THE BLADE

DO YOU NOt KNOW HOW TO GRIND A PIECE OF METAL

>>34724609
oh piss off

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>>34724609
I didn't use loft for a blade. But hey, if you want to be a fucking dick about it then you can get help elsewhere.

>>34724609
it sounds like you need a nap there champ.

>>34724575
see>>34724604

>>34724564
>>34724604
>>34724645
What's the boss-extrude that you're trying to mirror?

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>>34724086
>to fire it, you need to stab yourself
>to stab something, you get shot
???????????

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>>34724656

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>>34724677
Try mirroring that alone first and then the cuts.

>Injection moldable polymer grips, full tang, fastened with standard binding posts

>americans literally dont understand how to make a knife without 3d printing it

W
E
W
L
A
D

>>34724677
>blade extends past handle with no guard
is this a kitchen knife? literally this is kitchen knife design, not fight knife design. too bad it doesnt go far enough out to be useful. take an industrial design class or something

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>>34724719
>foreigners

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>>34724712
It just closes it.

>>34724770
... Did you extrude that from mid plane? If so, you don't want to be mirroring it when trying to mirror the cuts you made in that very extrusion.

>>34724719
Post your models, then. Because this guy is having a modeling problem, not a design problem.

>>34724743
>knife that thin yet that thick
literally useless, you could bend it along its length with ur fukken hands, and the weight distribution would be gutter trash for swinging or stabbing

literally what you have designed there is a really bad fillet knife. seriously. look up what fillet knives are like and youll see yours, except google will probably have good ones

>>34724802
nigga is designing a fucking cooking knife
>needing CAD to design a fucking knife
>needing to 3d print a knife
>not being able to fucking grind a piece of metal into a blade
lol!!!!

>>34724770
>>34724785
Alternatively, if you did extrude in a single direction, did you then make the cuts on the side you extruded from, instead of towards? You might just need to go into that original extrusion, flip the extrusion direction, fix whatever relations/dims that got borked from the geometry changing and then mirroring it.

>>34724843
>Not posting CAD files when talking shit about someone else's CAD files, let alone someone who is trying to learn from scratch
>Implying any mass-produced knife today isn't modeled first

I've hammered down nails and sharpened them into knives and arrow heads before, but that doesn't mean I could make two the exact same size and shape by whacking them with a mallet.

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>>34724562
>>34724719

You got any CAD projects going, loser?

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Heres the CAD file.

https://mega.nz/#!qNlFFJQR!JAe9yvjeJZa40ukzX_xWe9uV-vmq-us-4mC_h2IC5AA

>>34724918
>sear
obviously the extractor, even the image says it

>>34724936
password protected

>>34724973
>password

haters gonna hate

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>>34724876
>3d printing a knife
>using nails to form a blade
>using a mallet to sharpen things
o h h o l y f u c k

>>34725007
>Making up that anyone is 3D printing anything
>Implying that the mallet is what was used to sharpen knives instead of just doing the rough shaping before grinding the blade
>Willingly being this obtuse

>>34725005
Hah. It's a more recent version than mine, so I can't open it.

>>34718874
1911 shooter here, that little bit of thought really gets my noggin jiggling. That image is a near perfect grip, and if I can get my hand tucked in even closer, then by God felt recoil and muzzle rise might even be less than a heavy Springfield 9mm shooting 147gr. I would be down as shit to have one.

>>34718339
>Yes. That is meant to detonate on impact.
how does it do that?
does the blue explode when it's burnt by the solid fuel?
or does it explode due to the high speed collision? if so how would the initial charge not detonate it?

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>>34725069
How low you want it bby

>fucking Olympic faggots banning it because they got BTFO by commies

>>34725121
As close to the top of the trigger guard loop as you possibly can. Keep the grip angle between the 1911 and Luger (which is optimized for one-handed shooting, so it should definitely be shallower) and 10 rounds of 9mm in single stack so it can comfortably compete in ESP.
Blade trigger if you can.

>>34718874
>>34725069

I mean, the reciprocating mass will still be above the wrist if it bends in the same direction as the luger.

>>34725159
>ESP
Link to ruleset?

>>34725161
>reciprocating mass will still be above the w
but there is no hammer or slide to get in the way of your grip position, which means you can put your hand closer to the back of the barrel and stabilize it better while the toggle is still locked and the bullet is firing.

I would think this could lead to better shot placement

>>34725172
http://www.idpa.com/Content/downloads/2005%20Rule%20Book.pdf
Page 22. The only things you need to worry about are the size and weight restrictions.

>>34725218
Yeah, it won't flip until after it unlocks.

>>34725111
The drawing doesn't show because it's MSpaint, but the titanium tip has a primer on it that goes to the explosive. When it impacts it ignites the explosive.

Future designs will show it way more clearly.

>>34725237
Well all I can say is you're not a complete moron, but you have gone and reinvented the wheel a bit. These rounds already exist in artillery usage and are being replaced in the near future by ramjet assisted shells. You've essentially made a boosted gyrojet.

>>34724970
I know, that is what goofball named the files.

>>34725295
okay, can't fault you then. We had a guy that once named every project file a different porn star name for all 100 files.

That guy got a different job a few months later, miss the old fucker.

>>34725262
Thanks. My idea is to have them in a man-portable plataform. And the last explosive bit can be changed with other loads. I have 3 load ideas besides this high speed molten copper, so the plataform can be multipurpose with just a ammo change.

>>34725521
what ignites the solid fuel?
you have a plastic piece in between ignition and fuel.

>>34725948
The plastic is just a ring holding the gyrojet part to the powder charge, not a plastic disk between them.

The heat from the gunpowder will ignite the fuel, which will bbe slightly sticking out of the nozzles.

>>34724562
fuck you I want the f91w-1

How do you scale a part down in solidworks

right now its 12in long and i want to scale it down 10in long

Can we add a pastebin to the general?

>>34726380
Yes

>cad programs
>reading material
>etc...

>>34726380
This. As someone who is just getting started having a pastebin/googledoc with the programs and basic reading would be amazing, not to mention make me feel like less of an ass for asking.

>>34720355
>>34720118
yeah, never mind. talked with a tax paralegal today and she said that that deduction wouldn't help me at all because I don't earn any income from a business currently. So buying a machine through a LLC and then getting a tax break on it would not happen. in order to have the tax break you have to owe taxes on income the business has made.

fuck a duck, back to square one

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>>34725048
Sucks for both of us then.

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>>34727277
I just figured it out.

I had to mirror the whole body twice but I got it

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>35 Posters
>Only 6 CAD pics that aren't mine
>Shares cad model

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>>34723207
is that how they cut pic related?

>>34727463
I'm still learning, plz no bully

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>>34727535
Ok

>Ribbed for her pleasure

>>34724114
>>34724673
Why is it so hard for (Yous) to understand.

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>>34723207
>CNC
>not manual radius cuts

>>34727463
How are you going to stabilise it?
Or is that just not important?

>>34712375
Any chance of getting a bitchin exploded view for a desktop background?

>>34712489
>t. D+ in calc 1

>>34727668
Seconded

https://www.pdf-archive.com/2017/08/02/luger-barrel/
Did we end up with the same Barrel?

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How should i go to manufacture and attach some grips to this shooty box? maybe some rivets?nuts and bolts?

i was thinking of making the grips out of nylon laminate which i have access to, gluing it together maybe put tiny rivets on the unions if necessary but i dont know how should i go attaching it to the main rectangular body.

or make a mold, make the grips and then attaching them somehow.

>>34728088
weld some Angle iron on it and make it slide in with a tab on the bottom of the gun that locks it in.

>>34728125
>locks it in.
that locks the grip in.*

>>34728125
tanks man ill try that

>>34728088
for prototyping, 3d print them. If you don't have a 3d printer, don't worry. Just go to your local engineering college at 3:00am and figure out which building has the 24/7 3d printer lab. they all have one nowadays. If you need a key just wait until some Asians student comes out after finishing a late night study session and get in when he opens the door to leave
works first time every time

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>>34728088
this is your chance to do some fully sick woodworking anon, embrace it

>>34719574
its fucking amazing, but youre gonna want to pirate it. Shits expensive as fuck.

>>34727231
>>34726422
>>34726380
if no one has already started to make one I'll put together one and we can add things along the way.

>>34730437
whipped up something
https://pastebin.com/5YFw1Mmb

>>34727668
>>34727702
Not until I'm finished. Exploded view is the final step.

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>>34727929
I'm not making the actual drawings at least until after I'm finished with the model itself, but right off the bat I can see one major difference. I did a swept cut for the feed ramp

>>34728088
Two screws from underneath? Maybe dovetail it in position, even.

>>34730721
>This thread is for anons who are currently designing firearms, or firearm accessories, or using CAD to further their firearms knowledge.

Change firearms to weapons.

>>34730721
Link to the Machinist Handbook would be good.

>>34730756
seems like that would create a lip for the bullet to get caught on.

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>>34730783
Maybe, though that looked to be more historically accurate.

>>34730776
>>34730761
change it if you want. I'm headed to bed.

>>34730885
eww, I would make that more of a straight line

>>34730903
It was still designed in the 1800's, man.

>>34730915
that doesn't mean you have to repeat their mistakes

>>34730954
I'm making a historically accurate one first and then my own lever locking firearm based off what I learn from modeling it.

>>34730885
What references are you using for that? It's an awfully strange cut.

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>>34731036
Although, looking at it, it's kinda awkward because the depth of the profile. I'll adjust it. Also, it appears I forgot to put that .5mm radius.

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>>34730885
geometry looks off

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There, cut it with a couple lofts and made a variable radius fillet that goes from zero on the ends to .5mm in the center.

>>34712901
Implying that you can.

>>34731306
Though I suppose that's still technically off since the drawing shows the line going straight towards the midpoint on the section view, but whatever.

>>34731306
>>34731126
So do you do everything 1:1 or do you sometimes extrapolate based on what a toolpath on a manual machine might do?

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>>34731320
I have zero intention of actually manufacturing a P08, so I suppose it'd be a combination of the two? They clearly had to do a fuckton of setups for even very simple parts. The other Anon making a model of it is going to rage when he tries to put the ejector into the assembly. It is its own spring and the geometry is really fucky.

Also, for what it's worth, this more accurate feed ramp looks even worse for reliability and the previous one.

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>>34731332
Pic related. The I had to create multiple configurations just to change the angle of that bend and it's still fucked in the assembly because it slides along the groove in the side of the breech block as it cycles.

>>34731344
>The I
Why the fuck did I put "The" there? I need some fucking sleep...

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>>34731344
Maybe in practice the spring steel moves itself slightly out of the way?
>>34731362
You cannot stop georg will not let you until it is complete

>>34731377
Yeah, it'll move on out of the way in practice, but there's no way in hell I give enough of a shit to try and make that accurately function in the assembly.

>>34731390
Pic related. In this section, you can see the groove in the breech block that it slides in and out of when cycling. I'd rather put the ejector onto the breech block itself and have it impinge on a feature in the barrel extension or frame when it reaches full rearward travel, but I wasn't around in the late 1800's to put my 2 cents in.

>>34731390
Then don't beat yourself up over it until you manage to get a supercomputer that can accurately map out materials.

Just keep notes of why there might be perceived to be an error so you can BTFO people who claim you are wrong

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>>34731407
>and he forgets the pic
Insomnia is one hell of a drug.

>>34731412
Whenever I see a weird detail like that I assume the answer is a quirk of the mechanical limitations of machining or something. Hell it might of even have been a weird obsession of not touching the barrel which is why the Germans spent so much effort to have a barrel that didn't move except the x and y axis for so long

>>34731435
I mean, it's not like the thing isn't already filled with coil springs... It makes for fewer components, I suppose, but it's just kind of awkward a design.

>>34731466
Well they're all dead anyway so unless someone (I understand that will not be you, please do not get angry at me) decides to fuck around and experiment on making exact Luger clones or god forbid fuck around with existing ones we'll never know why they decided to do things.

Or if we find notes detailing the engineering processes.

>>34731483
Mike Krause manufactured some repros (mostly .45 and .32 ACP models, which means he could have taken some liberties anyway)... They go for more than most would be willing to pay.

http://www.rockislandauction.com/detail/64/1426/krause-custom-luger#detail

>>34731502
If he is to be believed the entire thing is based off exactly the trials pistol

>>34731524
He doesn't need to worry about parts being interchangeable, though.

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>>34724086
FINISHED

>>34731872
Looks good, Steve.

>>34732158
Gracias amigo.

>>34730756
>I did a swept cut for the feed ramp
for what purpose?
I created a sketch on the "right plane" and marked where I wanted the groove, then I set up a plane perpindicular to that sketch and used a simple circle cut into the barrel.

who ever is boring this out will likely have a hard time adjusting the angle of the barrel perfectly in a mill or something so I figured sketching it on the barrel would allow you to take a 10mm round file and work it down to the depth you wanted.

>>34731872
It is spring?

>>34732811
Well that's what a spring's cross section looks like, so...

Just learn about this book, courtesy of forgotten weapons
http://thehomegunsmith.com/pdf/Expedient-Homemade-Firearms-Vol-II-PA-Luty.pdf

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>>34733345
We know they work, too. Australian biker gangs use them.

>>34733345
https://mega.nz/#F!aNE2HbTJ!I5nJdH26k4I5iAbCodlugQ

Also

Is it legal to Model off a patent, especially if it's expired?

>>34734335
>is it legal to draw pictures and not sell them
no.

>>34734340
Is it a copyright or trademark infringement if i share pics of the 3D model?

>>34734365
>Trademark infringement is the unauthorized use of a trademark or service mark (or a substantially similar mark) on competing or related goods and services
>Copyright is a legal right created by the law of a country that grants the creator of an original work exclusive rights for its use and distribution. This is usually only for a limited time. The exclusive rights are not absolute but limited by limitations and exceptions to copyright law, including fair use. A major limitation on copyright is that copyright protects only the original expression of ideas, and not the underlying ideas themselves.

you won't get busted if you don't sell it.

>>34734335
>Is it legal to Model off a patent, especially if it's expired?
Unless it's expired (which is a pretty short time in the US) yes it's illegal, even for personal use. Copyright is much more complicated.

>>34734335
Depends. It depends so fucking much.

If you don't plan on registering it and are just designing it at home for a hobby then you are ok. If you plan to profit off it then you are fucked.

>>34734416
What about giving it away for free?

>>34734685
Might violate ITAR but that's what Tails and library connections are for.

>>34712489
>>34715949
>nothing positive to contribute because to stupid
>to dense to hide threads
>I get jealous because people are smarter than me
Just go play pimp my gun then you fucking autist

>>34716199
you have to define a profile and a path. The path must intersect the profile at a specific point in order to follow it. Check out this model I made of a barrel and look at the rifling cut feature and you can see exactly how I did the geometry

https://grabcad.com/library/50-bmg-barrel-and-muzzle-brake-1

how do you import a assembly into a assembly,
I get suppressed parts.

>>34735101
>open assembly
>select insert component
>select "Existing Part/Assembly"
>select the assembly you've made

>>34735159
technically you have to click on the screen to actually place the component as well.

in case you get stuck.

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>>34734936
TY

>>34735159
Nope

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>>34735258
>Nope
ok retard.

>>34735277
>retard
see>>>34735258

>>34735298
It doesn't suppress your parts if you're not a retard.

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>>34730039
i man i wish i was good at woodworking im a good with mills and lathes but i fail at wood

>>34728125
>>34730760

I attached that sucker like it was box construction im gonna use heat weld on plastic and 1/16 rivets.
hope it works, i wanted to make it adjustable for different arm length but the overall length of barrel doesnt give for more like in the p90, the grips are gonna be fixed so if i want to adjust for arm length ill have to put spacers on the buttstock

>>34735321
Are you the guy who modeled that belt fed shotgun?

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>>34735321
>you can't mill and lathe wood
explain.

also
why so much more work?

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>>34735314

>>34735450
>2 grips
why?

>>34735481
Refrences

>>34735502
delete those
make the points "fixed" in their drawing.
it will be over constrained but then you can mate it freely in the assembly without it exploding.

>>34735512
>it will be over constrained
at first
until you delete the old relations

sorry for confusion

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>>34735411
there is a lot of shitty wood where i live, i could try and it wouldn't be that bad but my design doesn't allow for wood unless i make it sheets and also get it together like a box with glue and it would not be good for the cam track. i think this is better explained with an image (pic related).

i was thinking in something like that but since I am making the body with sheets of nylon I incorporated the handles along the lower sheet, less pieces.

>>34735348
nop, sorry

>>34735962
this means that if i use wood the cam track guide is going to be on friction with wood or i would have to make a extra outer layer of wood with some weird internal spaces for the guide holder

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Gonna work on finishing the CBJ-MS later tonight.

>>34735962
if you Incorporated the grips the grips to the left panel near side you can make that all one sheet

>>34736449
yes also thinking of that although they could be somewhat THICC at 36mm (1.41 inch approx)

>>34735962
>that finger joint looking business

wth are you planning on making this out of and how?

>>34737132
sheets of nylon

>>34736428
Das a cute m11 clone. Can I have the files?

>>34734335
If the patent is expired, you are more or less free to make carbon cpoies of the mechanism and even sell it. However everyone and their brother can also do that. And if you make any of your own improvements, you would probably want to check that said improvements aren't covered under newer, unexpired patents.

>>34718792
I work in a machine shop, and I've seen them make some pretty impressive shit with a single jig and moveable pins. I just run simple lathes and what not myself, though.

>>34734335

What do you care

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Looking for info on helical mags (design and function) do you guys know any books or other resources I can look at?

>>34739816
No need for a book really, search "mousegunner" on youtube and find his helical mag video

Could you theoretically use a bunch of rubber bands in place of a recoil spring in a blowback subgun?

>>34740245
maybe for a handful of shots

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>>34739816

>>34740480
Not OP but any chance you can do a disassembly/assembly video?

>>34740649
Already did a kinda shitty one on my youtube channel. >trip is channel name

>>34740717
You gonna post cad?

>>34740747
Helixs scare me in cad, probably could manage rest of the parts fine though.

>>34740860
I meant any cad.

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>>34736428

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>>34740887
Ohh

>>34741003
dakka

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>>34740947
Does that work like I think it does?

>>34712489
Spotted the liberal arts student

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>>34740245
. . . maybe?

https://www.youtube.com/watch?v=0rzw-TFVbMM

>>34735512
>Fixed
Gross. Don't do that. Always fix the base component to the 3 starting planes.

>>34737843
The number of different angles you'd need is pretty staggering, m8.

>>34740245
https://www.youtube.com/watch?v=iukCrZLUK78

>>34741288
then re-add make them self contained
"fixed" points make it easy to re add dimensions without accidentally moving anything.

>>34742740
I'm not sure I understand what you're saying.
Ideally, the front/side/top planes of the assembly and the base component should be the same. Just making them coincident is usually the best option.

So many models I've had to make revisions on were fucked because someone did it the lazy way and just let the first component be "fixed" wherever they added it to the assembly. If I want to make a mirrored part in an assembly, I shouldn't have to create the fucking plan if the mirror plane is in the center of the base component.

>>34742802
my original statement about adding fixed points was because there are two handgrips because one was used in the construction of something else,

I have had problems with sketch relations between separate parts of an assembly not allowing for proper mating either because it made the part over constrained or it exploded.
my suggestion to use 'fixed' points in the sketch was to remove all relations to any outside part.

you could then add relations within the part itself, then set them to be driven, then delete the fixed points

which would make the part match up to it's original design while not containing any references to other parts or fixed points.

>>34742866
Ah, alright.
Yeah, I try not to make sketch relations at the assembly level for things I know will move around a lot. I'll use the convert entities option and then kill the link to the other component in those situations.

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>>34741018
Depends on how you think.
See below

>>34724086
>>34724114
>>34724673

>>34743298
That's hot, wonder if you could swap the open bolt for a striker so it's legal to build

>>34743598
I've thought about that, but I also thought about making it without the magwell milled out of the upper receiver and making it a open bolt single shot, like the GB22.

>>34743666
That's a thought, can it have an extractor and ejector long as it doesn't have a magwell? (Never looked into legal openbolt much)

>>34743298
This is nice. I like this.

>>34743760
How else do you safely unload it without firing?

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>>34743760
https://grabcad.com/library/mini-machine-pistol-1
Pic related
slots for the ejector and sear

>>34743970
Flip to safe and smack against a hard surface.

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Is it possible to mirror a boss extrude to make a cut extrude?

>>34744130
No, but you could set the new cut extrude lines to be equal to the new boss extrude lines in the cut sketch.

>>34740245
I've seen it done on an AK before, just to say it could be done.

>>34744130
No, though if you don't mind getting into more advanced functions, you can make and use "forming tools". It's in the Design Library (The icon on the far right of the screen which is a little green block, medium yellow block and taller blue block sitting next to each other). One company I worked for used them pretty extensively for sheet metal.

>See this thread.
>"Oh, this is actually pretty sweet."
>Cannot think of an idea that has not either already been done commercially or is impractical.

>>34745042
You won't be the first to build a mouse trap, Anon, but you can always build a better mouse trap.

>>34745042
See
>>34745100
I'm personally working on a less good, more legal, buildable with hand tools and no welder, hybrid sten/uzi type machine pistol. The point isn't to make something new and competitive so much as to practice machining and prototype something myself.

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Update bump

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So I thought it'd be cool to get a Luger off GrabCAD and try to print it on my new Prusa to see how it works and shit.

What the everliving shit is wrong with Germans for them to be able to dream this kind of stuff up.

>>34745226
good brains for hobbies.
bad brains for social.

>>34745264
>social

The fuck is that? I browse /k/, we don't know of that phrase.

>>34745226
You have to give them credit for the era in which it was made, but the thing is still a hot mess by today's standards.

>>34745100
>>34745153
Well, when you put it like that, making a bullpup helical mag carbine doesn't sound so retarded.

>>34745396
I know right? Like, after I found out that the "luger in mud is unreliable" meme is false, the true reason it died was because it was hard to produce.

Hard to produce, are you kidding me?

If Prussia had devoted all their tooling and engineering resources to making rocket engine parts instead of Lugers, they could've had a Mars colony by now.

>tfw you will never watch the Imperial Eagle soar over the red plains of Mars

>>34745450
I'm surprised it took so long for them to get off their asses and adopt the P-38.

Thread hit bump limit. New thread here: >>34745616