DIY one piece case opener works! - Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading
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Old 07-01-2012, 05:04 AM   #1 (permalink)
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Default DIY one piece case opener works!


Hi guys,

I have a one piece cased watch, a Seiko chronometer 5626-7091 with the gold cap on the back. I'd imagined this would be the only such watch I'd have to work on, so thought the proper Seiko S14 or S12 case opener would be overkill for me to buy - if I could find one. So an hour in the shed and I knocked up a home made tool. I just made the circle part exactly 30mm as per the crystal size marking on the back of the case (checked with a vernier). It's made from 1mm aluminium, and the hole is tapered so there is only a very thin line of the circumference which is actually 30mm. I got the idea from the diagrams in the S14 tool instructions as it shows a cross sectional drawing of the tool.

Then I placed the tool in a small portable vice and carefully tightened it. Following the directions for the S14 tool and levering between the watch case and the tool, the crystal popped out easily!

I guess the next challenge is refitting it to the correct depth, but I'll worry about that when I come to it... :

Cheers

Stuey
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Old 07-01-2012, 08:29 AM   #2 (permalink)
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Default Re: DIY one piece case opener works!

Good stuff, necessity is the mother of invention. Every man needs a well equipped shed.


Mike
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