On Fri, 11 Mar 2011 06:40:48 -0800 (PST), Jim Wilkins
wrote:

[...]

Instead of locking the spindle you can clamp the divider plate. The
leverage would be better.

Actually that is the way I was planning to do it. A pin through one of
the holes on the plate.

The laminate trimmer has 1/4" collets and better mounting surfaces
than a die grinder.
Speed control:
http://www.amptone.com/images/tenmavariac.jpg

What are you going to use it for?


3) Do it on the *wood lathe* - that one has not only a spindle lock
but an in-built dividing plate with 72 positions. Again the Dremel
holder should be easy to adapt to the tool rest banjo, but the above
limitations apply. Also would have to get a new chuck for the 1"-8
spindle. OTOH how easy would it be to get one of those MT2/plain
adaptors and cut *3/4"-16 thread on it and use it with the Taig
chucks?

Buy one of these, tighten a nut on it and thread the nut:
http://stores.homestead.com/WaldenSpecialties/-strse-31/MT2-Threaded-Arbor,-1-fdsh-2''/Detail.bok
I'd face the arbor flange side of the nut first and saw a slot so it
could be removed if it stays in the chuck. Or leave a hex flange on
the nut.

OK. Is an adaptor with an internal thread 1"-8 (for the lathe spindle)
and 3/4" -16 outside thread (for the chuck0 an option? I was
wondering how to preserve the through hole.

BTW I have been looking around at the spin indexers: Somebody on
another forum posted pictures of the indexer which he adapted for ER40
collets! I thought it was a particularly smart move but could not find
a description of how he did it.
Michael Koblic,

Why bother unless you already have the ER collets? 5C collets are as
cheap as any other and are the standard for square and hex collet
blocks, end mill grinding fixtures etc

The benefit is the extended range of grip. Much of the stuff I use is
not within the 0.003" or so of the 5C collet size.

http://www.micro-machine-shop.com/Co...tm#5C_fixtures
Those are fine for cross-drilling a shaft or milling a square or hex
head.

The 10th picture down. From what I read people use these blocks more
than anything else. I even thought of them and a single 3/4" 5C collet
with a threaded shaft through it to match the Taig chucks.

Picture No. 21 is probably one of the cheaper combinations I have
looked at: Spin indexer and a 5C chuck. My concern there was that I
would run out of space on the X2 table.

You could pick a few appropriate sizes for your rod stock and collets,
you don't need a full set. I chose 1/2" and 1" for expensive metal
like O-1, 12L14, 303, 4142 etc.


I shall re-consider it.

Michael Koblic,
Campbell River, BC