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collet chuck for the lathe

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wheeltapper	12/05/2010 19:31:14
424 forum posts 98 photos	Hi I needed to hold some small square rod in the lathe. the 3 jaw was no good, the 4 jaw was too big so I used the collet chuck from the mill which has the same size taper. the trouble is it will only hold very short items. I've seen collet chucks to fit lathes but the cheapest was about £35. so I had a go at making one, I already had the hardest part, the closing ring , so this is the rest. front back with collet and closing ring. best bit was it only cost me £12. that and a bucket of swarf cheers Roy
Rob Manley	12/05/2010 19:55:49
71 forum posts 14 photos	Looks really good :D When I first started out I could never understand why people would spend time making machine tools but now I really enjoy it - satisfying isn't it. How is the boss held to the flange? That's going to be a really useful part of your workshop.
wheeltapper	12/05/2010 20:13:57
424 forum posts 98 photos	Hi It's screwed. I used the same thread as the closing ring so I had something to check the thread with. I threaded the body first then held the disc in the 4 jaw, drilled through, turned the flange and marked the bolt holes. after it was fitted to the lathe spindle I bored for an internal thread ( my first ) then screwed them together with threadlock. after that I bored through and turned the taper for the collet( that was fun). then I marked the body so it always go on the same way. I got a total runout of a quarter of a thou with a piece of ordinary bms round. cheers Roy
Circlip	13/05/2010 14:16:39
1723 forum posts	Swimming against the flow by making it Roy, what you gonna buy the Missis with what you saved ??? Regards Ian (There's method in the above statement cos when the oven is hot after the Sunday roast, it wont take long to "Blue" it )

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