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Making a polygon lathe cutting mechanism

Amazing work

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Steviegtr	26/12/2022 22:56:10
2668 forum posts 352 photos	Not sure if anyone has seen this amazing guy making amazing things. This is a device for cutting most kinds of polygons on a rotating part in the lathe. Steve.
peak4	27/12/2022 00:34:50
2207 forum posts 210 photos	I spotted the same video, via Facebook, a day or two ago. I can remember seeing something very similar many years ago on TV; it might have been Tomorrows World. That one had the rotating cutting tool behind the headstock on a separate parallel spindle, and was shown cutting hex heads. Anyone else recall that? Bill
Rod Ashton	27/12/2022 06:35:10
344 forum posts 12 photos	Wow! Makes you want to be an engineer??
Neil Lickfold	05/01/2023 10:53:31
1025 forum posts 204 photos	I saw a picture of a system, where they have a spindle mounted on the cross slide, and has a cutter head on the headstock. Out the centre of the cutter is a universal drive or CV joint of sorts, a sliding coupling, and head stock has a 2 to one reduction on the spindle unit. If your lathe spindle is running at 700 rpm turning the cutter head, then the spindle on the cross slide holding the part to be polygon turned is running at 350 rpm. They had a range of cutters with 1,2,3 inserts. The accessory headstock came in different sizes etc. Looks like a great project to make as a kit or something. I do have a spare spindle from a cue making lathe. So it could potentially be used with a reduction box or belt drive. It will be down a bit of the list of things to make though.

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