ER40 Collet Chuck alternative thought.
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Hi,
WRT collet chucks for the lathe.? I've been planning to make the attached adapter for a while to suit my single tumbler heavy 10.? What is stopping me is my inability to cut metric threads so I can use commercially available collet nuts and/or a lack of faith that I can make a collet nut. The design is based off of a 5C collet adapter. (https://www.ebay.com/itm/185766045549?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=g2V2IIY7Qu2&sssrc=2047675&ssuid=67pz0IenSSi&widget_ver=artemis&media=COPY ) This is the variation where I trust the taper to secure the adapter in the spindle similar to a 5C collet adapter.? Alternatively, I could use the 5C collet closer to secure the adapter in the spindle, the threading for that is not shown. I figured that I'd machine the external taper between centers and then insert the adapter into the spindle and machine the internal taper, bore and thread for collet nut.
Note that the taper is wrong for the heavy 10 spindle per tooling chart, need to adjust before I make.
Any thoughts would be appreciated.
Erik S.
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