Backyard Ballistics - Sponenburgh Ball Mill - Private Data LLCI built a Ball Mill. Of the type commonly known in the hobby as a "Sponenburgh Mill". I bought the book "Ball Milling Theory and Practice for the Amateur.ball milling sponenburgh,Ball Milling Theory and Practice for the Amateur Pyrotechnician .Buy Ball Milling Theory and Practice for the Amateur Pyrotechnician on . Lloyd E. Sponenburgh (Author) .. Good information about milling process as well.Ball Mill - WPAGThis ball mill was made from a design by Lloyd Sponenburgh. It's a very efficient ball mill and each 1 gallon jar can mill 1Kg of black powder in 3 hours.
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