I bought a Rockwell Mill
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great machine, it came with a M head that was never fitted to the mill and I had a Rusnok head waiting for a home. THe rusnok is not real heavy so its a whole lot less load on ones back to install/remove. here is a link to it
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Looks to ok sized for the mill. If I come accross a rockwell head I will grab it but for now this will do, I have a shop with another mill
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just click on shop tour althought its time to up date.