Firing of model rocket engine in slow motion

[HolmwoodsGrammar]

What fuel do you use?

[basvg1]

@HolmwoodsGrammar Blackpowder. These engines are commercially available, we do not make them ourselves, that's too dangerous.

[HolmwoodsGrammar]

@basvg1 how boring, it would be much more fun to build your own.

[basvg1]

@HolmwoodsGrammar that's true, but difficult and I do not want to loose my hands :)

Besides, it even isn't allowed to do legally..