Also: solid fuel motors may be quite hard to ignite for launch, but solid fuel itself is damn easy to ignite when you're making it yourself. Take care, keep con

Also: solid fuel motors may be quite hard to ignite for launch, but solid fuel itself is damn easy to ignite when you're making it yourself. Take care, keep containers pointing away from your face at all times, and generally FIRE HAZARD. Also: a bad fuel mixture will clog your nozzle with "solid combustion residue", as we called it with my friend, leading to the infamous rapid unplanned disassembly (the motor will promptly explode), so if you value your life and not being in prison, never ever use metal containers for it. Thin PVC pipe dangerous enough in case of RUD, but is much less likely to kill you. (Obviously, I too somehow survived childhood unharmed...)