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Connecting Stem to Crown problem


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Connecting Stem to Crown problem

I am fitting a Miyota movement 2117 to an old watch case, and wish to use the old crown. Problem: The 2117 includes a stem with tube of (Standard) 0,90 ext diamter, but the crown must be fitted to a 1,10 mm ext diameter stem. How to do this?
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Normally there is this thing called a stem extension. You can get one that is 1,1mm on one end and 0,9mm on the other end.

The problem is that, as far as I know, it would only work on really long stems, otherwise you wouldn't have enough room to fit it. This also requires that you cut the original stem...

WATCH-STEM-EXTENDERS-EXTENSIONS-70-90-TA

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Esslinger have 0.9/1.10 stem extensions ... They call that "stem extenders".
I think it would be better to cut the extension first, short enough so that the 0.9 connector is as close to the crown as possible, then cut the 0.9 stem to the right length.
That's the way I do and I've never had any problem.

Envoyé de mon Moto G (5) Plus en utilisant Tapatalk

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