/r/fosscad

Photograph via snooOG

A community dedicated to the discussion of 3D printed guns and related topics.

r/fosscad is a subreddit dedicated to the discussion of 3D printed guns and related topics.

RIP JStark <3


Subreddit Rules:

  1. Keep posts on topic and high quality.

  2. Be civil and don't troll.

  3. Do not encourage, glorify, incite, or call for violence or physical harm against an individual or a group of people.

  4. To combat spam, accounts must be at least 7 days old to post and comment.

  5. Always research your country, state, and local laws before printing or downloading 3D files.

  6. Do not share "3D printing files to produce firearms" per Reddit's content policy.


View the subreddit wiki here.

Join the official Discord here.


If you see a post/comment that breaks subreddit rules, Reddit Content Policy, or Reddiquette, please report the item and message the moderators. Thanks.

Gun Subreddits

/r/DIYGuns

/r/GhostGunner

/r/GunDesign

/r/Gunsmith

/r/Gunsmithing

/r/Reloading

/r/Firearms

/r/NOWTTYG

/r/dgu

/r/fosscad

102,846 Subscribers

2

Is there an accurate model of the tech nine upper out there? Got a design idea but want to look at the upper internals before buying one 🤞🏻

0 Comments
2024/06/30
14:49 UTC

1

Any builds using the Calico helix mag?

0 Comments
2024/06/30
14:35 UTC

0

Creator search

What channel name is the Captain america/ Nova launcher sailing under? I want to make one but whenever I search on Odyssey I can't find it. Pretty much anytime I don't have a channel name I can't find something. Sucks.

0 Comments
2024/06/30
13:33 UTC

51

Suppressor Sunday #22

4 Comments
2024/06/30
12:45 UTC

19

What’s your EDC?

I know there’s no picture commenting on Reddit but just talk about your EDC in the comments or make your own EDC post to the group.

34 Comments
2024/06/30
06:10 UTC

128

For those of you doing 15mm for the 4th, don't forget that you can automate!

25 Comments
2024/06/30
04:34 UTC

1

Help

Does anyone know why this would be happening to the bottom edges, and know how to fix it?

2 Comments
2024/06/30
03:23 UTC

1

Ruger sr22

Hi does anyone have a stl file or any cad file of the Lower too a ruger sr22?!

0 Comments
2024/06/30
03:16 UTC

62

SigMacX. First test fire success.

Now need to add some asthetics and a more mpx style handguard and she'll be sailing soon. Hoping to make a few different variations.

9 Comments
2024/06/30
02:53 UTC

0

Sg22

My sg22 upper keeps on snapping when I shoot it and the charging handle breaks the top part whenever I charge it and if it doesn’t break it only shoots once and won’t shoot semi

4 Comments
2024/06/30
02:49 UTC

0

Do u think a Chairmanwon spaceman 19 wistand a .40 since it’s has a thicker fit nd much stronger ?

7 Comments
2024/06/30
02:40 UTC

0

Looking for an M&P 40C frame. Anyone know of one out there?

0 Comments
2024/06/30
02:29 UTC

0

What kind of Lower parts kit

I’m currently working on my first g19 build and I’m currently confused on the lower parts kit I should get. I would like to get a shadow systems lpk but I don’t know whether to get their gen3 lpk or their p80 lpk

Would anyone happen to have any insight on this to help me out?

7 Comments
2024/06/30
01:03 UTC

47

DBA w/ BFSIII

It's fun

2 Comments
2024/06/30
00:07 UTC

13

ak grip but for an AR?

is there a file for this grip but for an AR? i want to put it on a sg22

13 Comments
2024/06/29
23:44 UTC

26

DAO 4-Banger, Anyone?

4 Comments
2024/06/29
23:41 UTC

1

Inspirational

https://en.m.wikipedia.org/wiki/XM29_OICW

Is something like this possible for one of the existing signal launchers? Does anyone know why these were not widely adopted in professional circles?

5 Comments
2024/06/29
23:14 UTC

2

Hoffman opinion?

I love their design and I’m thinking on switching from the older model I use double ribbed now but thinking on going to sl-15 v4.8 I like that the grip already on but there isn’t a double ribbed but how do yall that have one like it?

1 Comment
2024/06/29
22:45 UTC

4

Beach pidgin barrel liner

Has anyone built one with a brownells (red man) barrel vs chazel? Or know if the dimensions are similar and can just drop one in and go?

5 Comments
2024/06/29
22:32 UTC

227

3D printed bumpstock update (she works🙌)

31 Comments
2024/06/29
21:22 UTC

9

Using baking soda instead of salt? + more ?

I have been doing electrolysis as rust removal for a while. Instead of salt for the electrolyte (which produces chlorine) I have been using baking soda or washing soda, depending on what I have available. Is there any reason to use salt over soda in the barrel making process?

I have also been using carbon (graphite) pieces instead of iron as the cathode. This keeps the amount of sludge down compared to an iron one. Would a carbon rod of suitable length work in the barrel ecm or is the straightness or surface finish not good enough?

I have seen people using vinegar to help prep the barrel surface for ECM. Would a short soak in muriatic acid (HCl) work as well?

2 Comments
2024/06/29
19:01 UTC

43

Not a gun but a nerf need help picking my first handgun project

I feel like after under going this project I want to make something better I'am thinking about a handgun something under $300 and something not as boring as any old glock or mac11 can you just through some recommended projects in the comments.

14 Comments
2024/06/29
18:47 UTC

4

First Build Recommendations

So I’ve been floating around this subreddit for a while now and I’m finally to a point to try my first build. I’m planning on making a g19 and was wondering if anyone had any recommendations on parts, parts kits, lowers, uppers, etc.

11 Comments
2024/06/29
16:30 UTC

4

Digital Nimbus Invader remix?

Hi there lovely people!

I've been curious whether anyone has modified the Digital Nimbus Invader kit in such way so that it actually resembles the Flux Raider kit?

I wanted to print a Flux Raider kit for my airsoft M17 and I was wondering if anyone has done such modification/remix before me or if I have to do it on my own :P

Thanks!

2 Comments
2024/06/29
15:58 UTC

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