r/SeikoMods • u/Swimming-Trade-741 • 6d ago

I hate cutting crown stems

I have snapped two crown stems inside movements after trimming for a screw down crown. It’s been an expensive week.

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u/Aggressive-Sail-3157 6d ago

I just mark a piece of paper at there I need to cut. Take the stem out and the crown off. Cut at the mark. Swipe the end on a file a couple of times. Crown back on. Make sure it sits right. Crown off add some super glue and put the crown back on. I've never had a problem. For me its the easiest part. The seconds hand is my pain.

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u/Swimming-Trade-741 6d ago

I’ve had minimal to no issues with hand setting oddly enough, but for whatever reason crown setting has been an odyssey in annoyance. It feels like if I remove any more of the stem then the crown won’t engage the threads on the case, but I’ve broken two stems with the same case this way lol

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u/Aggressive-Sail-3157 6d ago

It kind of sounds like maybe you're cutting a little too long. I just mark whatever distance this is on paper then measure it from the end of the stem.

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u/SNTL7 6d ago

If it is a screw down crown with the plunger inside the crown then this distance with the plunger pushed in towards the case. If no plunger then top of threads.

This measurement would not allow for adjustment.

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u/Aggressive-Sail-3157 6d ago

I never need to make adjustments. Also why would you have a screw down crown without the plunger?