thanks for sharing this knowledge.
What I meant to convey in my last post was the idea that my pressing force might not be sufficient to compress the tube enough, so that the resulting bulge might not be deep enough to prevent it from beeing pushed downwards.
I'll find out.
Considering your wet pressing precess, I heard of this the first time, now you aroused my curiosity.
That wetness and pressing force are somewhat interchangeable is nothing new for any cometpressing experienced pyro enthusiast, but with rockets one would expect new troubles, like tensions in the grain when drying.
Do you use a special process or do you just leave the motors lying around?
And considering an endburner in a waxed tube - drying times must be rather long?
I store the damp propellant in a sealed container. It stores well.
Any fungal troubles?
I make soft pucks with the damp propellant
Can you elaborate this?
What equipment is used here? As if you would normally press pucks, only with lower pressure?
My feeling is that the riced BP granules dry rather quickly, leading to constantly changing properties / prompting one to work in a rush. Is that justified or am I counting beans here?
since you seem to be an endburner ethusiast - would you share your prefered nozzle diameter?
When I did the last experiments a few years ago, my feeling was that the typically prefered nozzles are far to wide. I have very nice alder charcoal made by a fellow pyro and dare to suggest that my BP quality is quite good. But even with 1/5 of the tube ID nozzle diameter, no motor ever popped on me, not even with wistlemix.
Since efficiency (and viciousness of sound ) can only improve with smaller nozzles I'd like have a setup as aggressive as possible. The commercial tooling set's 1/4 of tube ID seem rediculous to me...
(Be aware that all my experience is limited to 15mm/~8oz motors)
How do you feel about this?