80% lowers Help

>>28414189
>selling out fast
Fuck off fudd, shouldn't you be stocking up on .22?

>>28414207
Do you know what the words you're using means? Or did you just parrot phrases you gleaned off here?

>>28414244
80% lowers are pl

>>28414244
i wonder who is behind this post?

>>28414189
Metal will never run out you fuck just cast your own lowers gee how hard can that be?

NE still can't seem to get rid of its "limited edition" lowers. It's such a low demand item, if you find one marked "sold out", it's because the merchant has lost all hope of selling it and gave it to aluminum recycling.

>>28414189
>spending extra on an unfinished lower for no reason whatsoever

I should really get into the business of parting tinfoils from their money.

>>28414289
Unfinished lower actually sounds like a good idea, it's easier to finish raw aluminum than one with thick ass anodizing that has to be removed fucking up all tolerances.

File: ghostly.jpg (2MB, 1992x4792px) Image search: [Google]

2MB, 1992x4792px

Hey faggot what questions can I answer for you?

>>28414303
Untrue. Anodizing is a fucking treatment, not a coating you mental midget.

>>28414311
Type 3 anodizing forms a thick ass oxide coat that eats into the aluminum. If you want to get rid of it, you will decrease size of aluminum.

>>28414336
Why would you want to get rid of it? You literally are making no sense.

>>28414345
I think at this point, both of you are arguing over what "treatment" and "coating" means.

>>28414345
To apply a different finish.

>>28414336
Oh, and by 'thick ass' you mean .0005”-0.002”?

Yeah what the fuck are you talking about... By removing that much, literally all dimensions are still in the tolerance range for milspec.

>>28414354
No, the argument is that it is a treatment, and does not constitute a 'thick ass layer'

>>28414359
Why would you remove it? Anodizing leaves you a great base layer.

>>28414289
>building M16A1 clone
>only company the produces A1 lowers is Nodak Spud
>finished lowers always sold out
>finished lower has NDS's information engraved on them
>buy 80% lower from them
>have Colt's rollmark and manufacturing information engraved
>mill out FCG pocket
>send out to get anodized
>now have authentic looking M16A1 clone that would be impossible to achieve otherwise

>>28414374
Not if you want to plate.

>>28414289
>live in commiefornia
Its tinfoil everywhere else in the union, but if actually think being paranoid here after the slew of gun laws and proposed laws to come, you're a major idiot.

>>28414388
And where did OP say he wants to get it plated? What are you going to chrome your lower?

>>28414383
>only company the produces A1 lowers is Nodak Spud
that's wrong.

>>28414415
No one said or implied it, especially OP. But perhaps it could be a good idea to do that. Maybe.

>>28414421
Milled out A2 lowers don't count. I've yet to see one that looks as nice as a true A1 forging.

>>28414428
How? On what planet it a brittle chrome coat a good idea?

>>28414414
>but if actually think being paranoid here after the slew of gun laws and proposed laws to come, you're

If I actually think being paranoid... what?
That sentence makes zero sense. Try wiping that foam from your mouth, take a deep breath and parse a sentence that has an actual meaning.

>>28414441
This one.
Or imagine, you could even polish and gold plate your lower. Maximum bling.

File: ew.jpg (57KB, 720x684px) Image search: [Google]

57KB, 720x684px

>>28414459
What are you a sand nigger?

>>28414444
Are you seriously telling me you can't the last few words of that post?

>>28414471
Sand nigger wouldn't use an 80% lower.

>>28414511
But only they would gold plate a gun.

>>28414520
There are always mexican drug lords.

>>28414480
Oh fuck me, i left out another word. You win this argument.

But seriously, most any other state, sure people go a bit tinfoil. But here in california, the politicians love and can step over the line to test the limits.
So even if you make fun of people, there is a use for 80% lowers.

Also, that earlier sentence of mine, what about it doesnt make sense?

A lower is a lower is a lower.
Only masochists get 7075.

>>28414289
I got an 80% because I like the slickslide look, no rollmark no serial no engraving whatsoever.

It's sleek and sexy.

>>28414547
Isn't that the alloy it's supposed to be made of?

File: IMG_1625.jpg (641KB, 3264x2448px) Image search: [Google]

641KB, 3264x2448px

>>28414560
You're god damn right.

>>28414571
There are two types of aluminium in the firearm industry, 6061 and 7075.
7075 is harder and more sought after by people who pretend they drop their rifles from helicopters. 6061 is durable as hell, but not as much so as 7075. The only time this will ever come into play is the aforementioned sexual helicopter maneuver.

It's basically the milled vs stamped debate in the AK world.

>>28414599
I see.
So helicopter accidents aside, the only time the difference does come up... is when you drill it?

File: 4355q11.jpg (131KB, 750x600px) Image search: [Google]

131KB, 750x600px

>>28414599
>It's basically the milled vs stamped debate in the AK world.

No, its more like the billet vs forged debate in the AR world.

>>28414630
Drill and mill, yes. 6061 is like butter, 7075 is like cold taffy.

>>28414646
7075 still cuts like butter. There is no reason to cheap out, what will it save you, 5 bucks?

>>28414654
There's no reason to spend more on something harder to work with either.

End of the day, it doesn't make much difference and I like 6061 because it doesn't rekt my bits.

File: image.jpg (2MB, 3264x2448px) Image search: [Google]

2MB, 3264x2448px

>>28414547
Only masochists get aluminum lowers period. Pic related. Polymer master race

>>28414668
7075 wont hurt your bits either you fucking tool.

>>28414755
Gotta love polymer 80.. Runs like a champ

>>28414836
I'm speaking from experience, fuckwit.

>>28414900
Obviously you fucked up. Literally you sound like a fucking idiot.

'That Aluminum alloy is gunna hurt my Carbide bits' fuck off.

>>28414960
Be me
>mill out 80 percants arms lower with jig
>it's like butter almost no effort
>modify the jig to take tm forged lower
>the damm thing was rough on my bits
Anyone who says that it won't eat your bits is talking out of their ass

>>28416368
Fuck you, If it damaged your bits its because you were cutting too hard. Carbide bits are made for machining steel you fucking mong. Aluminum cuts like butter regardless of alloy.

Ordering an 80% receiver online is meaningless. The only reason to do this is to preserve your privacy, and the metadata from any and all online transactions is being logged by the NSA, who can look at it at any time for any reason with no warrant required.

Buy it in person. And pay cash. Anything else is unclear on the goddam concept.

File: worstday.png (81KB, 470x556px) Image search: [Google]

81KB, 470x556px

>>28414421
Secure trips are a bitch, huh? :^

>>28416524
Are you also saying we have to buy uppers in person with cash as well? And all components?
Ammo too?

>>28416816
If you want to keep Big Brother out of your gun cabinet, then yes. Obviously.

>>28416845
Ok. when the US government gets as competent as Big Brother, ill be sure to keep that in mind.

>>28416485
not the same anon, but i agree
6061 is nicer in the garage than 7075
biggest prob i ran into is drilling at too low an rpm

>>28416861
You're unaware of the NSA's metadata program?

You're unaware that, courtesy of the last cromnibus bill, that local law enforcement has access to your entire goddam Internet history? All the funz you bought, all the porn you looked at, and every inflammatory comment on every web forum? With no warrant required?

>>28416948
Son, if they were actually utilizing that data, you would've been put in the ground by now.

>>28416970
>>28416948
>no one mentioning NDAA 2012

>>28416885
That is entirely because you suck. Set your RPM higher if its an issue you fool. I dont know of a drillpress in existence that cant be set fast enough.

>>28414336
Maybe if you're hacking it off with your Cold Steel paperweight

But that begs the question of why you would need to remove it anyway

>>28414631
>billet

Billet is what comes out of the continuous casting process. It has vastly inferior properties to the bar stock stuff is machined from.

Bar stock is made when billet is sent through a rolling mill, at which point it meets the mechanical properties of the alloy it is sold as.

>>28414900
>milling dry
>calling tools "bits"

Let me guess you did this on a router table too

Soooo... seeing as we have actual machinists here, perhaps you guys could recommend a user-friendly drill press/mill/CNC/whatever for under a grand and a half that would be suitable for, uh, I can't imagine what.

>>28417592
>people say trips are cancer
dumbass, didnt say it was still an issue.

>>28417726
>actual machinists
kek

>>28417726
Invest in:
>Good drillpress
>discount mill/drill
>good lathe

In that order if you want to get into machining. A drillpress is literally one of the most useful tools in ANY shop, and milling is needed much less. There is no need to get a full size bridgeport for most hobbyist machining. Finally, a metal lathe is a great purchase, but I say get one last because its where you should spend the most and so wait until you are sure machining isnt a fleeting thing for you.

>>28417726
What kind of transportation/space do you have?

A good old floor mount drill press (Powermatic, Clausing, Buffalo, old Delta) shouldn't run terribly much on Craigslist, and will run forever, as well as being very powerful and rigid. These also give you a lot of space for jigs. Downside is one will be a job and a half to move, because they are so heavily built.

If you just want it for one AR build and small projects, spend maybe a hundred or two on a a Harbor Freight press on Craigslist. Look up reviews of each model, they can vary drastically in quality. Generally the older ones are slightly better built, but all are pretty much disposable garbage, so don't pay anywhere close to new price. Upside is that they are easy to take apart, and parts are fairly light cast pot metal so don't require a forklift to move.

Judging by your price point, though, I would be tempted to suggest one of the better Grizzly mills (again, look up reviews for each model because they vary greatly in quality). These will be even more difficult to move than a heavy floor mount press though, so do your research.

A mill will give you much more options. Imagine being able to make your own milled AK receivers, 1911 frames, pretty much anything you can think of with the right techniques.

>>28417850
There is literally no reason to get 6061 over 7075. You just said it yourself, there was no issue. If you cant machine 7075 well, you must be using some ghetto nigger grade tools.

>>28417879
Thank you.

>A mill will give you much more options.
Honest question: Would you recommend one for a complete noob?

File: tumblr_inline_ml07zqR0wD1qz4rgp.jpg (18KB, 400x400px) Image search: [Google]

18KB, 400x400px

Is it worth buying an 80 lower? I just want to build a damn AR, but FFL requires 21 years of age. Looking online for a stripped lower but they're no where to be found. Do people that have the tools let you use them and help you get your shit right?

>>28417897
Well how many guns do you plan on machining? If less than a handful, just buy a drillpress and use a router jig for the milling.

Even if you never make another gun, a drillpress is useful for anytihng from woodworking, to home repairs, to metal working, etc.

Oh, and it will save you ~$600

>>28416368
It's called a "tool" not a "bit" and you're right. Aluminum will wear a carbide tool. If it didn't machined AL parts would be much cheaper than they are.

Improper speeds and feeds,too slow in particular, cause the tool to rub against the metal instead of cutting it. For a shitty setup aim for .0004 per tooth (minimum 250sfm) and avoid climb milling. You'll likely just induce chatter on a flexy setup.A good deal of knee mills (think Bridgeport) aren't rigid enough to climb mill and maintain accuracy. Your average joes $100 drill press sure as fuck is not.

Can you set your speeds and feeds on a cobbled up drill press being used as a mill? No, so this info is shit. Do this instead: use lube,use compressed air to constantly remove chips and cool the tool, crank up your rpm and push the tool until it chatters then back it off until it stops.

Leave a few though for a clean up pass also:consider using a roughing mill for the majority of metal removal. The design breaks up chips and helps quite a bit.

e.bay.com/itm/3-8-3-FLUTE-MEDIUM-LENGTH-HSCO-COBALT-ROUGHING-END-MILL-FOR-ALUMINUM-/301835701680?nav=SEARCH

>>28417947
>Aluminum will wear a carbide tool.
Hardly, especially if you take your time and keep it cool. It's not like he's mass producing lowers, probably less than 5.

>>28414960
You're an idiot. If carbide was magically unaffected by AL don't you think machinists would have figured this out by now?

You might wanna keep your fingers in your ass and off the keyboard if you don't know what you're talking about.

>>28417897
>complete noob

If you are reasonably mechanically inclined, and can do basic math, you should be able to teach yourself how to run a mill.

I would recommend looking up:

>dimensioning and tolerancing (the foundation of machining)

>speeds and feeds, depth of cut (RPM is absolutely critical, on a manual mill you can go by feel for feed)

>squaring up a block

>cutting fluids (very important for tool life and surface finish)

>home shop machinist forum is great for noob questions

If you struggle with righty tighty, probably find a friend to do your machining.

>>28417931
The possibility of milling out my own 1911 from an 80% blank appeals, and there are various other non-gun projects that spring to mind. But not if I'm biting off more than I can chew.

>>28417963
I'm sitting hear wondering how you can make this statement without actually knowing what you're on about. The model of VMC you run? Or you run a jig borer right? Actually you don't even know what either are without a search.Right this is /k/ that's just the way it is.

AL will destroy any tooling if it's not run properly. It can do it in inches or after thousands of surface feet all depending on the equipment, operator/programmer and tool quality. Fact.

>>28417976
>If you are reasonably mechanically inclined, and can do basic math, you should be able to teach yourself how to run a mill.
That's more or less what I was looking for. I'm a (currently underemployed) senior level IT techpubsfag/QAfag, so I know how to do research and train myself. I just didn't want to be the equivalent of the first time funz owner who goes out and blows a grand on a .338 Lapua magnum, is all.

Are there any good instructional manuals you'd recommend?

>>28418032
What you're saying is correct, but 7075 is by no means undoable with HSS, a router table/drill press, some coolant, and a careful hand. Yeah you may not get as nice a finish, but that's nothing that can't be solved with a dremel

File: IMG_1617.jpg (491KB, 3264x2448px) Image search: [Google]

491KB, 3264x2448px

>>28418032
Fact, my 80% came out great w/ a router.

oh, and its 7075.
>kys

>>28418167
Not going to lie, that looks like shit.

File: IMG_1622.jpg (648KB, 3264x2448px) Image search: [Google]

648KB, 3264x2448px

>>28418248
post yours m80

>>28418075

If you just want to make a few lowers from 80%, you really don't need a mill, a drill press and a careful layout will work fine

Expect a serious investment if you choose to go the machining route, both in money for machine and tooling, and more importantly in time spent learning and researching.

Machining is a real profession, and should you choose to go down that road you will spend a tremendous amount of time and energy learning both the mechanical principles behind it, and the (simple) CNC programming used in nearly all production shops

While I don't know you personally, an IT background leads me to believe you have the attention to detail to be successful at it though. If you are still interested after doing some research, consider an introductory class at a local technical college. This both gives you access to real equipment to get your feet wet, and more importantly years of experience in best practices from the instructors.

I feel like this may be a little outside the scope of your interest, but i hope it helps

>>28418385
Every little bit helps. Thanks.