Helene 14KT Gold PESAG Swiss Movement
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Hi Neven , Agree we you that guard pin is in general a suspect , but OP replaced the fork, no joy. Perhaps roller is damaged or misses the guard pin, so OP is going to check the escapement with high magnification & adjust end shakes as well. Regs
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If you're running at 70° C you can use a lot stronger solution than you've got. I use around the same strength solution as you and at at 40° C it takes about 5 days to completely dissolve a 0.9mm Dia. stem
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By HectorLooi · Posted
That is around 60-70°C, depending on how thick-skinned your fingertips are. I've always wondered if that really helps. It isn't hot enough to temper steel. Is it only to allay our fears of breaking of the pivot? And if the pivot breaks, we can console ourselves that we had tried our best. I normally put my soldering iron tip, set to 250°C, at the point where I wish to bend the pivot and heat it for about 30 seconds. Does that work? Honestly, I don't know. But at least that is at tempering temperature range. Have I broken any pivots trying to straighten them? Sure! But at least I've tried my best. 😅 -
By nickelsilver · Posted
I straighten pivots like this routinely. Get the part running true in the lathe, not counting the pivot. Heat brass or nickel tweezers in alcohol lamp until you can barely hold them, and use them to coax into alignment. -
Well I just found out that 90% of the designs I like have the numbers painted with radium paint, so I think that's ebay fever cured 😆
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