Anyone know what’s the fuel combination of Estes? I live in a country where shipping this is probably impossible. As a high schooler I was very keen on rocketry, we ended up cobbling one using a deodorant can as the body, a slurry of potassium permanganate and sulphur or sugar as the fuel (which was hypergolic at the wrong times) and an igniter which was a trail of the same fuel about 30 cm long. They’d take off and explode about 3m up (burn rate?). It was stupid and fun but the chemistry teacher killed it as soon as they became aware of it. Good times though.