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 a...

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 of m...

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 bef...