Good experiment but don't forget an old bolt is softer than a tempered razor so the scratches may well be deeper.
There are a lot of variables with lapping or stropping with pastes but let us know your results. I've toyed with the idea of using micro-mesh polishing compound ( 1 micron ) but my CrO strop ain't broke so not keen to fix it.
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Os from Oz
Sometimes it is easier to ride the horse in the direction it's going.... But it spoils the horse...
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