Stripped Crown Wheel Screw Hole - Bulova 11ACAC

[rottobotics]

What options do I have?

This is more of a practice movement, since there are other issues as well. I'm open to options that might not be acceptable to a customer.

Threads on the screw look good.

I have JB Weld and Loctite 242.

Edited April 8 by rottobotics

[rottobotics]

Outside diameter of the screw threads is about 0.7mm.

I also have a 125W soldering iron and a small butane torch. Though I currently only have solder for electronics, it looks like I would need silver solder for something like this 

Edited April 8 by rottobotics

[clockboy]

Welcome to,  the forum, enjoy.. I suspect the thread is a reverse thread hence it has been stripped by tightening the screw not undoing the the screw.. The only way to fix this IMO is to find a donor movement I’m eBay. 

[AndyGSi]

Options are, new part, re-bush the plate or try and close the existing hole and re-tap.

[nevenbekriev]

The real option is to use a little bigger screw (0.8) and cut the thread for it.

[Neverenoughwatches]

The quick dirty fix is packing the hole with tinfoil. 

Basically a poor man's helicoil.

[rottobotics]

You're correct that it's reverse threaded. I've disassembled another of this same movement before that wasn't stripped. When this one felt gummy in both directions, I knew there was an issue.

I appreciate all the suggestions. I'll keep an eye out for a donor movement. I might try the tinfoil idea out of curiosity to see how well it works.