Re: [ATM] Pressing was Re: Oversize tools questions

["Mel Bartels" <mbartels@bbastrodesigns.com>]

> Mels technique with the scratching  can be extended to what could be
> called "selective scratching" to correct zones.  Wherever there is a
> high zone on the mirror, lightly scratch the corresponding zone on the
> lap.  This will give a somewhat more aggressive polishing action at that
> zone.


Yes, I do this regularly as well as teach it in my mirror making classes.
It's quicker to scratch zones in the pitch then let the pitch squeeze in
about the time the zone is fixed, than it is to make a deeper mess with
channeling/re-channeling.

Mel Bartels


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