1) A hot filament made from a light bulb or glow plug, which operates on 2V.
2) Propellant is shavings from matches.
Be careful, one of the explosions I have had in my life was trying to upscale a match stick rocket to a larger version. I was stuffing match sticks into a brass tube. That was a LONG tine ago (>60 years). Obviously, it wasn't too big as I wouldn't be writing this if it were. In retrospect, wear safety glasses.
Thank you! Yes, i read that nichrome wire works best as filament/heater, but the green trigger advice, how exactly is it made and what’s all the components used in it?
If possible, a safety button would be a great thing to add, but how can i do that?