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4GSR
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In the event that you score the 9j and are unable to source #10 collets/tooling I wonder if you could turn an arbor #10BS on one end and a more common cheaper collet system on the other.
Does the #10 use a nut or a drawbar? That might determine what the set up would look like.=
Daryl
Daryl,
I did exactly that for the mill I had. Made a adapter with a No. 10 B & S shank for the spindle end, the other end made for ER-32 collets. Worked like a charm. The Gorton 9J mills had a drawbar with 5/8-11 thread.
Ken