Steel ball grinder - GIFs

Steel ball grinder. Not really sure what these are for. Bearing roughs? ball mill use?

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Previously:

https://www.homemadetools.net/forum/...901#post175573
https://www.homemadetools.net/forum/...3666#post99722
https://www.homemadetools.net/forum/...982#post175934
https://www.homemadetools.net/forum/...102#post172277
https://www.homemadetools.net/forum/...269#post150201

maybe shot put balls

this remindes if what my grand dad told me and my brother.... why does a boy cat always out run a girl cat???? because he is ball bearing...:rofl: