saw these on the online auction site , I don't think I've been around long enough ...never seen one.Anybody know what attributes or possible "failurebutes" this may have. Maybe this is a manual machine only device, I have some early Weldon and Putnam mills that came out of an estate auction that had some really nice looking home made grinds that vibrated like crazy above 2k. These two took some skill to make, are they factory? They are described as Crest-Cut-Roughing end mills.
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