I used my air cannon to set pilot lines in the top of trees to pull up my climbing rope but wish to chat about safety.

So for an abundance of caution after reading the pipe manufactures waring about pressuring sch 40/80 pvc pipe makes me wonder just what is a realistic burse pressure. I choose to ...

I recently got a 4 footer of 1 inch allthread rod, and I intend to use it for the good of mankind. (I'm going to be making some big ass sabot rounds because I think they're cool.) Each shell will weigh about 6 pounds and consist of a 2 foot long section of the 1 inch threaded rod. The discarding ...

How's it going people. Someone asked me to design a projectile made to carry lines without tumbling. I've made a new sabot and fin setup designed to be fully reusable. Both the fins and sabot are made out of TPU, which should make it extremely impact resistant. The fins are much larger, and consist ...

I've printed something similar! Bought the files at cults3d for 0.94€, it's this one: https://cults3d.com/en/3d-model/tool/m12-bolt-apfsds-tank-round

I did have to use two hose clamps on the sabot to keep it together so i could run an m12 tap through it, because the standard fit wasn't ideal. But ...

Interesting tests! Have you tried switching to tougher filaments like nylon or carbon fiber blends? They might reduce shattering and make the sabots more reusable.


I haven't tried using carbon fiber anything, since it's more expensive and I don't really want to attempt an abrasive filament out ...

What does "operating pressure" mean on that valve? I see two pressure ratings, and one of them is 75 PSI and the other is 5 PSI.

So, I was thinking of ways to make APFSDS rounds for air cannons, and I realized that threaded rod is basically pre machined to have sabot interface grooves. I 3D printed some fins and sabots and they seem to be durable enough for a few shots as long as the sabot doesn't instantly hit the ground ...