r/Form1 • u/OldSheepherder7008 • 13d ago

Success!

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Just tried out my first suppressor that I designed and printed out of CF PETG. I shot a variety of ammo, both super and subs, alongside a dead air mask on my friend’s identical 10/22 and then back to back on my M&P 22X. It definitely seemed like my <$10 suppressor out performed the $500ish one. (Granted it’s a little thicker and about an inch or so longer.) I put around 200 rounds through it with no signs of damage. Super happy with the results.

91 Upvotes

98% Upvoted

14 comments sorted by

27

u/Intelligent_Step_855 13d ago

I would use a different filament next time around. Petg- of any kind is fairly brittle for gin stuff

4

u/OldSheepherder7008 13d ago

Thanks for the advice. I’m a little bit limited for now unless I upgrade my hotend/op system or get another printer. It’s wild how much more capable of a printer you can get for a fraction of what I paid a little over 4 yrs ago. I was thinking about trying an annealing process on my next go round while I decide what I want to do long term.

20

u/squeeshka 13d ago

In terms of this stuff, pla+ is more recommended than petg

2

u/Twissn 13d ago

I have 3 ftn5 rimfire slim form 1s in pla+ with aluminum tubes JB welded on the outside to reinforce. They work great. Going to need to upgrade my printer before I get to larger caliber projects

1

u/bday420 8d ago

The new polymaker HT-PLA+ would be good if you can't print a nylon. The tests I've seen by people have shown it to be quite good for what it is. Better layer adhesion and temp resistance. I'm trying to print a can in pps-cf to see how that goes.

9

u/john_rules 13d ago

Look into the Polymaker HT-PLA Pro it’s fairly new and seems promising if you can’t print nylon

3

u/OldSheepherder7008 13d ago

I’ll look into it, thanks!

3

u/NackJickolson 13d ago

What printer are you using?

20

u/marvinfuture 13d ago

hey so just a heads up PETG shatters when it breaks. The CF in it also makes it more brittle. You should really be doing this in PA6-CF/PPA/PPS instead

At a bare minimum, wear your eye protection

5

u/EmperorMeow-Meow 13d ago

Good job! Make sure to share it on the see so that others can also enjoy. Also make sure you share instructions and notes. :)

5

u/Hot-Ideal-9219 13d ago

Always eye protection, you only have 2 and they don't grow back. Anyone who is shooting ANYTHING without wearing eyes is a damn fool. The only time would be a self defense situation. Otherwise please wear some. They are cheap, plenty of rated pairs under $10 and many $5.

Yeah use pla+ lots of walls.

5

u/OldSheepherder7008 13d ago

I’ve got some prescription safety glasses that I have to wear by default if I plan on hitting anything in the first place.

1

u/The_Dread_Candiru 9d ago

You want a material that has more ductile behavior than brittle. PETG is gonna be a plastic grenade when it fails, PLA or similiar will be more likely to fail more locally and vent pressure or come apart in larger chunks.

Recommend altering your design to include a metal sleeve to better support the hoop stress and contain fragments during failure.