how to make a ball on the milling machine

Making sphere on a milling machine 1

Wiki says "A ball mill is a type of grinder used to grind materials into extremely ... For no more than $30 and in 5 minute you can build a ball mill of appreciable...

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Ball mill - Wikipedia

A ball mill is a type of grinder used to grind and blend materials for use in mineral dressing ... invention of steam power that an effective ball milling machine could be built. It is reported to have been used for grinding flint for pottery in 1870.

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