Collet chuck for PM1030V lathe

Cost wise, ER-40 will be less expensive for the chuck and collets. My preference between the two is to 5C, but I have a full 1/64th collet set (and I have used almost all of them). I also turn a lot of short stock pieces, with a lot of repeat machining where I may need to chuck up the piece 6-8 times between turning, drilling and tapping (and also doing a dozen of these parts at a time). Try that with an ER system and I think you would go nuts quickly. I use the ER-40 for longer stock, holding odd size stock that doesn't fit a 5C collet and sometimes for holding threaded rod securely.

Thank you mksj for the extensive write-up !

I think you statement "I also turn a lot of short stock pieces, with a lot of repeat machining where I may need to chuck up the piece 6-8 times between turning, drilling and tapping (and also doing a dozen of these parts at a time). " pretty closely matches what I need to do (making a bunch of machined knobs)

I will check out the links you provided.
 
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