Hi guys,
I'm just wondering if any of you have damaged the corners of the stone
during lapping.
I'm talking about a Norton 4k/8k and a Naniwa 12k in particular.
The surface I use for lapping is a desk which seems pretty flat to me
and 400/600 sand paper.
I give circular and/or figure 8 passes with no pressure.
I need to know if it's my technique or the surface.
Thanks a lot.