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Have you ever seen metal spinners going at it forming shapes by hand with a lump of wood from a disk going at full tilt. I was in awe !! It was like watching a man juggle razor blades :-)
I did see a demo of "extreme" machine ability with super fast feed rates - red hot pieces of steel slinging in every direction! They did a demo of cutting a threaded reverse cone - hollowed out of course, integral with a pedestal for display. Can't imagine the hours into that program. Even with the doors closed, I just feel like I should keep my distance when they are running like that - scary!
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Re: gunsmithing lathe/mill