[ATM] Pitch laps!!!

[Arjan te Marvelde]

Norm,

If you've searched the archives you probably also found:
http://astro.umsystem.edu/atm/ARCHIVES/FEB06/msg00034.html
Using the right plaster you can also get away without sealing, this is what
I do.

The source, Richard Schwartz' website, is off-line now as far as I know. (or
perhaps moved?)

   Arjan

> I also came across an opinion in the archives that plaster would be bad to
> use for a pitch lap...anybody have any info on that?...is a sealed plaster
> disk okay?