On Dec 16, 9:14*am, Ignoramus6780
wrote:
I am still struggling with making an encoder adaptor that would go
into the top of my spindle (spindle is hollow, with a 26mm hole), and
have a 3/8" shaft protruding on top to mount the encoder disk.

After a few things that did not work, I am settling on simply making
this adaptor out of 12L14. It should be easy to make on a lathe. I am
thinking how to avoid making it "expand" but just stay in place
without expanding.

Whet I would like, I think, is make it fit the spindle precisely, yet
without any significant force involved (that is, not press or
interference fit), but use some weak glue to hold it in place. This is
so that I would pull it out easily when necessary.

Would anyone have any suggestions as to the glue.

Thanks

If you cut a slightly oversized fine thread on the adapter it will be
fairly easy to get a light to moderate press fit since the threads
will crush. If you cut too deep you can pad them with fishline. Or you
could squeeze it oval or better triangular.

Some of the Loctites release easily when heated.

I was the stuckee nominated to salvage a batch of prototype assemblies
after extra-strong Loctite had accidentally been applied to screws in
brass inserts molded into plastic. The task was easier than the
assigner expected (hoped?) when I heated the screws with a big mutha
soldering iron.

jsw