I was kidding but yes I've been into rocketry. Back in the old days, late 50's early 60's, we could buy any chemicals we wanted. So, I got into making rocket engines (and fireworks) using tools you could order via mail and packing them with something like potassium nitrate+sugar, potassium chlorate+sugar, powdered zinc+sulfur. Made stuff like mercury fulminate. The tool to make the engine was nozzle shaped, spindle turned out of a 3/4" dowel on a base so that when you got thru packing a 3/4" X 8" cardboard tube you had a clay nozzle and then a hole up the middle of the fuel so that it really kicked ass. The fuel would burn side to side like modern solid fuel engines and then the last 3" was end burning. You could finish it off with a clay plug at the top, fuse, and gunpowder charge for a parachute. A "holy" towel was used to pack the engine starting with damp powdered clay as the nozzle and then the fuel itself dropped in about a TBLSP at a time and then packed down with the dowel/mallet which had a hole through the middle of it so it could slip over the tapered spindle. Bought dynamite fuse in 150' rolls....all kinds of neat stuff. Thanks to our Muslim "friends", those days are over.
No mas!