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

Why don't you want it to expand? It seems that a couple of rubber
plugs, sized very closely to the shaft, could compress just a little -
maybe .010 or so - and give a nice fit. Of course, I don't think you
ever said (or I never caught) how deep the hole is.

Most hot-melt glues release pretty easily and are alcohol soluble.
Solid-surface countertop guys use it to glue on clamping blocks which
they later release by wetting the edges with alcohol.