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- Sep 28, 2013
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- 4,319
I've read many times of 1.5x8tpi chucks fitting other lathes but not South Bends. A good exercise would be to make a copy of the spindle thread to use as a go-gage. Then do as others said, mount the backplate to your 4 jaw facing out, indicate off the internal register (non-threaded portion of the backplate) and then pick up the thread. Do a clean up pass first, check with your gage and then keep going until the gage threads in as far as the register. If the internal register is too small, carefully open it up until it isn't.
It's fiddly work that'll take longer setting up that it will to do, but it's perfectly doable. Making the go-gage will make it a lot more straightforward.
It's fiddly work that'll take longer setting up that it will to do, but it's perfectly doable. Making the go-gage will make it a lot more straightforward.