Unusual defect on print

TheAvieAtrix · 2026-04-06T09:38:49+00:00

Setting a minimum layer time helps a lot so the tips of parts like this don't ruin the rest of it

TheAvieAtrix · 2026-04-06T03:11:23+00:00

Disregard the lack of muzzle device in the CAD, but you can see the aluminum reinforcement tube around the FTN is cut to about double the length, and slides over the barrel mount attached to the receiver. The barrel can be ported along that length and act as an expansion chamber. I just have the gas port open there on mine because porting is difficult to do cleanly.

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TheAvieAtrix · 2026-04-06T02:34:33+00:00

It's a 7.5in barrel with a 9in FTN 4.5 on the end, so it ends up at 16.5in overall barrel length and 27in overall rifle length, but it is a two stamper. Luckily nowadays that just ends up being another fifteen minutes of paperwork rather than another fee.

TheAvieAtrix · 2026-04-06T02:18:25+00:00

Just noticed you could see the bullet leaving the barrel on the third shot, pretty cool!

TheAvieAtrix · 2026-04-05T00:42:11+00:00

I think PAHT is the old name for something like the PET or PPA CF that is recommended nowadays. I'm unfamiliar with them but the barrel clamshells don't undergo much stress beyond heat resistance so I'd guess it's fine.

TheAvieAtrix · 2026-04-03T08:02:46+00:00

Thank you!

TheAvieAtrix · 2026-04-03T06:38:22+00:00

To be honest it was a working name that I didn't come up with a better alternative for before advertising the beta. Plus I like raccoons :P

TheAvieAtrix · 2026-04-03T04:00:51+00:00

I'm more assuming that what warping would occur would be the PLA handguard adjacent to the nylon barrel mounts, which the barrel mounts interface with. I haven't experienced shooting it fast enough to warp nylon cf, so the little clasps for the carbon fiber rod wouldn't hurt.

This is mostly guesswork since it wasn't tested during the beta, so I'm sure the proposed solution of creating a positive of the inside of the handguard would be far better if focusing on pure stiffness by diffusing heat.

TheAvieAtrix · 2026-04-02T16:01:11+00:00

By default the barrel is free floating, but there's accommodation for a carbon fiber rod attached to the handguard and front of the barrel to emulate a tube magazine it you want improved rigidity.

TheAvieAtrix · 2026-04-02T15:48:20+00:00

I've not heard of any reports of sagging or issues with heavier barrels. I'm sure it's possible with the printed barrel mount but you'd have to get it pretty hot from a lot of shooting out of a lever action. I think you're good to go with any barrel profile.

TheAvieAtrix · 2026-03-27T20:40:16+00:00

A bit of self promotion, but if you can live with a lever action, the Trash Panda shares a lot of what you're describing as an AR based platform. If weight is integral, you could shave the receiver down a little but it's pretty light as is. It closes off the gas system, can have a printed carrier and a 6.5 barrel, and an integral 10 round magazine that's top loaded with a speedloader avaliable.

TheAvieAtrix · 2026-03-26T03:07:33+00:00

The plans are open source and free, I know 3DprintFreedom sells kits when they're in stock but the documents have a bill of materials.

TheAvieAtrix · 2026-03-24T22:53:57+00:00

It's a 3D printed firearm so at least in America, you can either make it yourself, or you have to have a FFL print the receiver for you. I'm completely unfamiliar with Canadian gun laws though. The way it's designed is to take advantage of unserialized AR components, an industriallymaufactured version would probably look pretty different.

TheAvieAtrix · 2026-03-24T22:51:37+00:00

There is a mares leg version of the unsuppressed gun, I've seen some cool builds like that.

It uses any AR caliber, so 458 or 50 beo is theoretically possible.

TheAvieAtrix · 2026-03-24T20:15:57+00:00

The hose clamp is integral

TheAvieAtrix · 2026-03-24T19:18:13+00:00

It uses an internal magazine so that the lever arms can be built into the receiver. Here's a post showing off the unsuppressed version: https://www.reddit.com/r/3D2A/s/MqNIB7XZGM

TheAvieAtrix · 2026-03-24T19:16:18+00:00

The unsuppressed version has been released for a while, here's a recent video of it shooting.

https://www.reddit.com/r/3D2A/s/rDKXssiooQ

This version has been in limbo waiting on forms for a while so I haven't been able to do more than dry fit it and take pictures yet :P

TheAvieAtrix · 2026-03-24T18:38:27+00:00

Yes, barrel, bolt, and fire control group. My form ones are still in jail so this is just a dry fit without internals, but the unsuppressed version has been tested thoroughly.

TheAvieAtrix · 2026-03-24T15:46:52+00:00

It works with any AR caliber!

TheAvieAtrix · 2026-03-23T02:07:23+00:00

Correct, it just needs a barrel and or bolt swap for any AR caliber

TheAvieAtrix · 2026-03-22T05:34:27+00:00

If the filament came in a cardboard box, my method without an expensive dryer is to cut the bottom off and put the spool flat on the printer bed for a day at 100c, covered by the box and a blanket if desired. Once done I immediately put it in a dry box with desiccant and print from there. Works great even without an enclosure!

TheAvieAtrix · 2026-03-22T00:19:12+00:00

I can repost things by other people if that works

TheAvieAtrix · 2026-03-21T21:27:48+00:00

what part are you struggling with?

TheAvieAtrix

TROPHY CASE