On 2008-02-11, Joseph Gwinn wrote:

[ ... ]

And this one has a collar and big nut, which is what mine came with.

I think that the collar I have actually belongs between toolpost and
ridged plate, and that the top collar is missing. Although they could
be identical. The collar I have is beat up and may be slightly oversize
for the top position, and interferes with the wrench at some some holder
clamp positions.

The shoulder washer for the top of mine has similar effects. I
think that it is intended to prevent the cam for the T-stud from
rotating too far in the open direction.

I just made a new bottom collar, the first part made
by me with that lathe. Perhaps the better location afforded by this
collar will resolve the interference problem. If not, I'll make a new
top collar, or a big acorn nut.

Good Luck,
DoN.

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