I needed a Ball Mill for a Black Powder mix and when i browsed the internet they weren't too expensive but looking at them i thought " I could make one for a lot less".. so here goes.......
MATERIALS...1/ A Float (either for toilet cistern or water tank) 2/ A bolt ( i used an old one i found laying around). 3/ A cork 4/ A wood dowl 5/ 2 drill bits (20mm flat wood and the other just a bit smaller in diameter than the dowl) 6/ some ceramic baking beads.
Step 1: Cut head
Place the Bolt in a vice or some other clamp and cut off the head with a hacksaw or disc cutter