IMHO pa6cf is too much for prototype which probably have some undiscovered issue. Personally I will stay on PLA, until release version. But different bilds mean more interesting information.
SgtButters
joined 5 days ago
I used setup of 50 litre can filled with 25kg of rubber mulch. 5mm steel plate behind can for safety. All stuff in 60x60x100 box filled with rockwool, at least 15-20 cm each side. Were quite.
30x30x1.5 square tube as slide cover and 20x20 square as breechblock.





Few more pictures.
I believe the minimum relevant group has been assembled. If you'd like to join, you're welcome.