Re: question about adjustable brass laps...and lapping


>>I plan on lapping with 3 different grit sizes.......starting with a
>>150 grit, then progressing to 240 grit, finishing with a 500 or 600
>>grit.

I have tried polishing things in a lathe with 600 sandpaper and I
find it hard to affect any dimension change. The finer grips only
seem to change the surface finish. Probably hard to determine with
a standard micromenter though.

How are you going to measure the hole to that level of accuracy?



.

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