How to Make a Smoke bomb with Potassium Nitrate

How to make a Smoke bomb/Rocket Candy with Potassium Nitrate (KNO3). Ratio used is 6:4, Potassium nitrate to sugar (using granulated sugar or powdered sugar both yield similar results) Caution: This burns at a high temperature and I am in no way reliable or responsible for what your actions do with this. The smoke is safe to breath but i don't recommend breathing in large quantities of it.