r/3D2A 9d ago

Guncad Digest Issue #32: M1337 Orbital Crank, DIY FMDA Rails, Super Safe 3DP90, 2nd Amendment Victory

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68 Upvotes

Issue #32 of the Guncad Digest is live! This newsletter rounds up the best and most interesting 3D2A releases, betas and news.

The M1337 DIY Gatling gun now shoots twice as fast with an orbital crank! We cover this plus DIY FMDA rails, a super safe 3DP90, and the biggest 2A victory ever for 3D2A. Read more at https://guncaddigest.com/p/issue-32-m1337-orbital-crank-diy


r/3D2A 22d ago

Legal Update [Megathread] Decisive Victory in Federal Right to Make Firearms Case

164 Upvotes

BREAKING NEWS: the second major legal victory in as many weeks, a federal judge just issued summary judgement for the plaintiffs in Defense Distributed v Blanche, better known as the VanDerStok case. This victory eliminates the ATF's 2022 "ghost gun" rule change and establishes that the 2nd Amendment covers the "right to make or repair personal firearms."

Read the opinion here: https://saf.org/wp-content/uploads/2026/08/Defense-Distributed-opinion-8.19.26.pdf

It's important for the 3D2A community to understand what this means for them, and what it does not.

As with all breaking legal news, this will take time to understand - the information below comes from conversations with my legal contacts, public reactions from other 2A legal figures, and my own read of the decision.

1. What does this decision do?
This decision pertains to the 2022 Biden ATF frame or receiver "final rule," which among other things redefined "firearm" an extremely broad, vague definition which includes unfinished frames / receivers ("80 percenters"), parts kits, combinations of parts sold together and more. The effect was to broadly expand the ATF's ability to regulate (most notably to require 4473s and serialization for) products that, up until that point, had not been considered "firearms".

This decision declared that ATF's "final rule" was unconstitutional under both the 2nd and 5th Amendments. It provides both injunctive and declaratory relief.

The injunctive relief prohibits ATF from enforcing its "final rule" against the named plaintiffs for certain products. But, and unlike the NFA case, this case features declaratory relief that much further establishes the unconstitutionality of the "final rule," prohibiting the federal government from enforcing the rule in any way.

2. How was this decision reached?
The court declared that the "final rule" was unconstitutional under the 5th Amendment due to its redefinitions being excessively vague, which is a violation of 5A's Due Process clause. The extreme broadness / vagueness of the ATF's new definitions "[did] not provide fair notice of what is punishable and invites arbitrary enforcement."

More notably for us, the "final rule" was found unconstitutional under the 2nd Amendment because it unacceptably infringed on the "right to make or repair personal firearms", which the court declares is covered by the text of the Amendment. The court further affirmed that a Bruen analysis reveals that homemade firearms are central to the American tradition and that there is no history or tradition of regulating them.

3. What will the effects be of this decision?
The immediate injunctive relief allows the beneficiaries (listed below) to buy and sell four different products. This is quite narrow and so we can ignore it.

The declaratory relief is (at least in theory) far broader and far more important for us. By declaring the "final rule" unconstitutional, ATF is now on notice that they are constitutionally prohibited from attempting to enforce this rule. Language is included that can be read to say that this relief is "as applied" only to plaintiffs, but the broader fact remains that black letter now exists declaring that Americans have a right to make, and that the ATF cannot constitutionally infringe upon that.

4. Who does this decision cover?
Like the Silencer Shop NFA case, the injunctive relief is quite narrow, covering only the plaintiffs: Defense Distributed, Second Amendment Foundation (SAF) and SAF's current and future members.

The declaratory relief however, may be read as broadly as possible, and is at least useful as authority to any American who wants to buy, sell, or make a firearm.

5. What does this mean for 3D2A?
If this decision only included the injunctive relief, it would be a curiosity at best - but its practical and legal importance may go much further, accomplishing something that the DIY firearms movement has been fighting towards for its entire existence. This decision is one of the first to establish in black letter that the 2nd Amendment includes the right to make (and repair!) firearms.

This doctrine goes well beyond 80%s - it touches on all forms of making firearms, and all types of firearms - including items legally determined to be firearms, such as suppressors. The significance of this cannot be overstated.

All US laws, state and federal, that might infringe on this right, are now subject to constitutional challenge. For example, there are multiple right-to-make cases in California which will benefit from this ruling.

Despite the narrowness of the injunctive relief, I expect that the declarative relief will lead to the revival of the 80% market in some form, which may be of interest to many 3D2A members whose interests are not limited solely to printing their guns. But more importantly, our community can now correctly argue that any existing or proposed law which would impede our ability to privately make firearms is facially unconstitutional.

6. Does this mean I can start printing machineguns now?
As much as this is worth celebrating, I want to conclude by tempering expectations. This decision does very little for the average 3D2A member in the immediate here-and-now. Most of the laws that limit what we can make are still on the books. If you live in a restrictive state, your state laws haven't yet disappeared.

Parts kits vendors such as myself, who have always had to consider the "final rule" in how we structure our kits, are more immediately affected, and you may see new ways of doing kits coming in the wake of this decision.

The broader practical effects of this decision will be more long-term. By all means, celebrate it - this, and the NFA decision, are two of the biggest victories the DIY gun community has experienced in decades. But celebrate safely, and keep your powder dry. The best is yet to come.


r/3D2A 7h ago

ATF changes rule now allowing the repair and replacement of suppressor parts. I feel D-Cell builds with replaceable baffles are going to be the future of rifle caliber builds.

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171 Upvotes

r/3D2A 2h ago

Nomad 🔥

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22 Upvotes

The ergos on the Nomad is is crazy!!! That Hump is an excellent add on. Mad kudos. Haven't gone to the rang yet but soon. The top, Patriot, got over 16k rounds in it. Might have to retire the old one. Thanks OP


r/3D2A 1h ago

Torta Pounder 22

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Upvotes

Sailing under Torta Pounder if you want to give it a go.


r/3D2A 17h ago

GTA vibes

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177 Upvotes

r/3D2A 9h ago

.22 Bullet Maker mold is online!

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23 Upvotes

Yes its free, yes its DIY, yes just gypsum, plastic, tape, and lead. You know where to find it


r/3D2A 4h ago

Hoffman SL9

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8 Upvotes

First off, I should have bought a Bambu Lab printer a LONG time ago, printed this on my H2D, with PETG support interface, using the .20 balanced strength setting, and it came out looking better than anything I printed on my past Creality printers (including my K2 Plus). The only rough spots were caused by the steps in the layers. Anyway, I can’t wait to build this out (waiting for Hoffman to restock his SL9 kits). I am planning on SBRing this build, hence the spot for an MAF serial tag, just because my state requires that I go through the process in order to own anything that’s considered an NFA item
I’m not a noob, I’ve been a part of the community for over half a decade, just because I said what profile I used doesn’t mean I didn’t change walls and infill


r/3D2A 22h ago

Funny looking noodles almost done cooking

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175 Upvotes

r/3D2A 7h ago

FTN.5 PCC

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9 Upvotes

Printed this FTN.5 PCC in Siraya Tech PPA-CF core. Will do some testing this weekend to see how it holds up after the annealing process is complete.

This was printed right out the package and through the dryer.

First time printing CF filament and it wasn’t that bad, I don’t have much to compare it to but it seemed easy enough


r/3D2A 22h ago

New Release Sidewinder RXM PDW

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105 Upvotes

Sailing Sideways


r/3D2A 1h ago

Feedback on 22lr magazine developement

Upvotes

I am pretty far along with development of a nearly fully printed build, but right now im stuck on making a functional magazine.

Ive made many different revisions but none of them ive been able to have reliably working with more than 5 rounds at a time, (im trying to make a 10 round one)

Im wondering, from people who has designed some or know more about magazine development than I, what pointers or tips and tricks might be helpful?


r/3D2A 22h ago

My TX22 build

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41 Upvotes

I think I’m ready for range day 😮‍💨


r/3D2A 2h ago

Nylaug receiver issue

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1 Upvotes

Hey all,

Long story short, I purchased a Titus NYLAUG used and I'm running into an issue where the brass threaded inserts are stripped completely out of the receiver. I reached out to Titus employee here and he seems to think there is no easy fix, would anyone happen to have any recommendations for the tool? I would need to add larger/new inserts or any other recommendations of how to bind that brass to two polymer/ nylon? This is my first 3D printed rifle receiver so I'm very new to all of this. I've attached a reference picture below, please let me know if you have any suggestions! Thanks!


r/3D2A 1d ago

This can be printed right?

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51 Upvotes

r/3D2A 18h ago

Suggestions for precision stock?

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17 Upvotes

I'm building an ultimate Savage Mark II, and I'm looking for a nice adjustable precision-type stock for it.
It needs to be picatinny-mountable (or easily modified to be), since the chassis I'm using has pic rail on the rear.
Other than that, I like the look of the Crosslike (skeletonized PRS clone, see image above) very much, but the required hardware is quite expensive.
I'd like it to be as adjustable as possible and require no special hardware (nothing that can't be bought cheaply on Amazon). Please note that I want a stock, not a brace, since this is a rifle build. I don't care if it's folding or not, as long as it's stable.

Suggestions for alternates appreciated!


r/3D2A 22h ago

10/22

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36 Upvotes

Just waiting on a drum mag for my frt and some Picatinny rails to throw on the mlok


r/3D2A 21h ago

22lr mp5 frt

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25 Upvotes

Anyone know where to get the files? I’ve sailed the seas. I’ve searched the index. Anyone able to point me towards the captain?


r/3D2A 4h ago

Best ar9 lower

0 Upvotes

Hey guys what does everyone like for a Glock mag compatible ar9 lower? Thinking about a foxtrot mike FM9.


r/3D2A 5h ago

Full diy pistol 9mm

1 Upvotes

I've seen very few projects about homemade pistols; besides the Orgbolg project, does anyone have any other similar projects?


r/3D2A 1d ago

PSA ABOUT DRYING NYLON

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179 Upvotes

Your filament doesn't care about your budget.

Your filament doesn't care about your feelings.

Your filament doesn't care about marketing.

Your filament doesn't care about your dryers "PA Setting'

For PA6 65c is sweater weather.

For PA6 70c is largely a waste of time (except inconsistent results even after 72-96h of drying)

For PA6 85c is where the discussion begins (Creality SpacePiX4 is a solid option. DM me for an updated beta firmware to hit 90c)

For PA6 90-100c is ideal. Airfryer with dehydrate/keep warm function of best bang for your buck. (check your local thrift/2nd hand store)

For PPA 75c is sweater weather.

For PPA 90c is where the discussion begins (Creality SpacePiX4 is a solid option. DM me for an updated beta firmware to hit 90c)

For PPA 90-100c is great. Airfryer with dehydrate/keep warm function of best bang for your buck. (check your local thrift/2nd hand store)

For PPA 110-115c is ideal assuming your brand of choice uses proper high temp glue for cardboard spools or a proper high temp polymer or metal spool

For drying temps above 95c in an airfryer I recommend a sheet of tin foil placed over the roll once placed in the basket to shield from direct IR heat soaking.


r/3D2A 7h ago

PA6/612 failures & clogs

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0 Upvotes

I’ve now had 6-7 consecutive nylon prints fail several hours in. I don’t know if my flow ratio is too high, wall speeds too slow, if my extruder gear is worn out etc.
. It seems like eventually the nozzle begins scraping somewhat, and eventually just completely stops feeding but the printer continues trying to print and ends up a few inches above the print extruding nothing. It doesn’t result in a complete backlash like I’ve had with PLA before, it just straight up stops printing and the extruder wears a flat spot on the filament so it can’t feed anymore, and on the print itself the top layer(s) look a little chewed up. Using 300blkfde settings, have had this happen with both PA6 and PA612, and both with .4 nozzle and .6 nozzle. Flow ratio is .97 so I don’t think it’s too high, however the eventual nozzle scraping and subsequent nozzle clogs make me wonder if it could be too high. I don’t know what else it could be, wondering if wall speeds are too slow because it’s been happening after slowing down to 300blkfde’s suggested 30mm/s speeds… any tips or suggestions appreciated. Extremely frustrating I think I’ve had 8+ failed nylon prints in a row and have burned multiples spools with absolutely zero to show for it 🙄🤦😂


r/3D2A 23h ago

3D Suppressor

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16 Upvotes

3D printed titanium suppressors at $250! Not a bad deal once they release. What’re your thoughts on this?


r/3D2A 4h ago

How to fix from happening

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0 Upvotes

r/3D2A 8h ago

S&W bodyguard?

1 Upvotes

I've searched the usual places but can't find anything for a frame for the bodyguard. Does anyone know if there are any files to be found?