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Hey guys. I've been into watches now for about the last 20 years or so. Started modding some watches a few years ago, and then started building some for friends. Now I'm fully invested in servicing and repairing. My easiest service is think was a UG ultra thin, and most difficult has been an Omega 1140 that had water damage and rust. Currently I'm doing some repair work for a local Jeweler, and I'm working on a Seiko 6138 chronograph. I love the ritual of disassembly and the radical change a watch can make with a service and a new crystal. Ill do my best to help out with questions, and also I'll have my own!

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    • This is a modern watch, the crown is definitely made from solid 316l steel. You must have heated the crown to some 200C caused the surface colour to change to light yellow. It's similiar to steel tempering. Yes it is the chromium oxide that forms during the heating that gives rise to the colours you see as you know stainless steel contains chromium. The fact the crown is SS lead me to a question, you've never heard of the alum method? Because alum would work perfectly in this case, instead of drilling, which, there is always a risk of damaging the crown, I would just let the crown chilling in some warm alum solution for 1-2 days and the job is done.   Sure can but the thing is the crown is not just mirror finishing, the lock symbol is polish while its background is some sand-blasted finishing so it would be hard to replicate that. You can buff it all shiny but losing the sand-blasted finishing means it won't look exactly like before.   Gasket is always tricky to me. I would try to use some gasket that look closest to the broken one in term of thickness and diameter, and check if the replacement gasket fit with some friction to the case tube. Lastly you can still use alum at this point.
    • No mate. Sorry if that offends you! Also please don’t take threads off-topic. I thank you sir. 
    • Hello and welcome from Leeds, England. 
    • Thanks Mark I have uBlock Origin Lite add-on for my Windows Chrome browser, so I've never seen a single ad on this site ! It also removes all adds from Youtube - I couldn't bear to watch it without uBlock
    • Thanks Mark, but can we still discuss the other important matter please and not be distracted from it. Thank you.
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