Working on a Hamilton 921 PW movement,...and the roller jewel "disappeared" during cleaning. So I ordered three (to be safe, as they are little buggers ), and started thinking how the heck am I going to hold it while trying to place the jewel in.
So my fix was to place a flat stump on my staking tool, invert the roller, and then carefully place the alignment stake into the hole in the roller.
I know that you aren't supposed to use that stake for anything other than aligning holes in the table...but what the heck...it worked.
It held the roller just enough for me to be able to have both hands free for the process.
Hope this helps someone out there !!!!
Best,
Randy