I have a few questions on the FTN as we get closer to Jan 1. I plan on submitting quite a few form 1s. This is my original form 1 that had a failure after less than 200 rounds. The particular day of failure was very cold and failed after only 2 standard capacity mags back to back not rapid fire. I followed PLAbois guide to a T.
- Is the FTN.4 the most solid 3d printed suppressor so far? Best performing?
- Best mounting method? I used KAK micro flash hider.
- Any other suppressors worth looking into? 5.56 as well as other calibers?
This failure happened with an 11.5” KAK “suppressor only” barrel. The core is annealed polymaker PA6 and I used a liberal amount of JB Weld.
From my understanding 4hrs isn’t long enough. You need to bake it at 100C for at least 10-12 hours for the crystalline structures to fully rebuild. I did a lot of researching and found that the longer it’s annealed the longer the chains, and that helps in impact resistance and creep. However. If it’s annealed too long it will weaken it and make it brittle. 10hrs at 100C, then SLOWLY lower temp to room temp. After that, either let it sit out in a humid environment for 2 weeks, or place in a plastic bag with a wet sponge for a 3-5 days. That should moisture condition it to spec