This is a swiss army watch I recently was given by a relative to repair, and I’m certain this is a screwback case but how do I actually remove it? There arent any notches for a watch wrench to remove it, so do I use a rubber ball?
this post was submitted on 23 Oct 2023
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I'll second the rubber ball. If you don't have a correct die for these sorts of finely toothed caseback fittings, a rubber ball may well work. It can be difficult to get enough grip if the caseback is tight, but it may work.
The next step, if that doesn't work, is a quick curing epoxy which can be removed cleanly with solvent. There are several makes of this sort of temporary fixturing epoxy. Just bond a handle on, being sure to not get any in the joint between caseback and case, remove the caseback, soak the handle and caseback in epoxy remover, and then tighten the cleaned caseback well with a rubber ball so that it's no so impossible to remove next time. Always use as little epoxy as needed to help keep it from dripping, and use a quick setting or UV curing epoxy so that it doesn't have time to run before curing.