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How to remove a stuck nut from old hand saw
(thelemmy.club)
Most of the nuts came out with minimal force, but the last one just spins in place. I tried rubber gloves, painter's tape, and duct tape to get a better grip. I'd rather not cut a slot in the domed nut if there's another good strategy.
The rest of the restoration underway:
Maybe you can clamp it down with something under the domed side so it won't turn when you unscrew the slotted side.