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lathe chuck (D1-5) and collets, $550,

I picked it up and brought it home yesterday.
It's definitely a D1-5 with 3 pins, integral taper -- my assumption is that its not intended for heavy work, so 3 pins is adequate.
Mounting it was definitely a learning experience -- first mounting, put a finger dial on the inner taper, .011" runout --"OMG WTF is wrong with this thing, did I get taken?" After about 3 hours of fiddling, trying different pins in different holes with varying degrees of failure, I watched an Abom video re: D1 series chuck mounting. In that video, he mentions that you can affect runout by your sequence / firmness of wrenching during mounting. Back out to the shop, fiddle, fiddle -- he's right, I got it down to ~ .0003" TIR by tightening / loosening opposing camlocks. A real eye opener for me, I had never thought that you could shift a chuck on a taper like that -- maybe more pronounced with just 3 pins ? I dunno, but I will be paying more attention and mounting my other camlocks with a DTI in the future.
 
Martin w said:
They don't come up very often. I missed one last year because I was too lazy and busy to drive to Windsor.

Mcgyver. Are the back plates removeable on the Jacobs? I have seen many D1-6 chucks come up for sale. I have D1-8 on my lathe, and an extra D1-8 back plate. Not sure if I could do the swap.
Click to expand...

I had a look on the weekend, and my :Jacobs Rubber flex had the D1-6 backplate integral, no way I could see that it detaches.

I still think they may have come both ways, as I have a smaller Rubberflex i'm going to put on the 10ee that is without a backing plate.

You probably need a D1-6 lathe as well, right? :)
 
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