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@snottyotter
This makes short work of the crown race issue 95% of the time. If the other part is stuck you've got bigger problems with a lot of frames where there's no way of contacting the top of the bearing from the top of the headtube because the bearing seats get in the way. I've had luck tapping a thin flathead screwdriver or chisel carefully at an angle from the bottom, then tapping that from the top of the headtube with something else, then moving round the bearing race gradually, and repeating, it's slow and infuriating work. I think I made a tool once out of some bent flat metal but it wasn't much better.
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