At 05:11 PM 9/26/05 -0700, you wrote:
>to failure due to hand shake, lack of precise control, or the stone catching
>and jumping across the surface leaving divots
Gary,
Yes, a feel in the fingertips for what's happening at the lapped
surface is a big help. Too much pressure on one side or another will
affect the surface.
>Next time I will use emery paper, probably tacked to plate glass with some
>spray adhesive
In my experience the lapping was done before the paper showed any
tendency to curl or buckle, even after it eventually was soaked with oil.
Dig-ins can happen to anyone but if you have a smooth hard subsurface and
mind the pressures in your fingetrtips those should not be much of a problem.
Unless you are very careful with an adhesive, and it would have to be
thin-bodied one at that, this will probably defeat the purpose of the plate
glass (a smooth, hard, flat surface) by turning it into a bumpy soft
surface (relatively speaking). If paper movement or curl is still a
problem then I'd use box or duct tape to hold it down, and you needn't use
a piece of paper any larger than the lapped surface requires and that will
further reduce the tendency to do funny things before you are done.
Regards,
Harry
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