How to make simple and cheap rocket fuel?

Kiteman4 years ago
Match heads.

Otherwise, google for "rocket candy", zinc/sulphur or "zincoshine".

You can also make decent rockets with plastic bottles pumped with compressed air.
I would go with the water rocket unless you have special needs they can easily reach a few hundred feet..

If you don't know how to make the fuel the chances of building the rocket successfully are small.