At 02:33 PM 10/27/2002, you wrote:

>Yep, ToothPaste is a very fine abrasive for cleanup and polishing many
>things including plastics like plexiglas and lexan.
>
>Need a hole through glass? Here's a little trick for you.
>
>Get yourself and electric eraser - the kind used by draftsmen.

Wow, great tip. I used those a bunch back in the hand drafting days. Got a
brand new one in box stashed. I bought two when I started a practice and
never needed more than the one. Many different types of eraser inserts were
available. Most graphics supply houses still have them available. Of the
many types I used, the white type for ink on starched linen was the most
aggressive. It would eat through mylar with just a bit of effort. Common
pink type was next for pencil on paper or vellum. The soft white
plastic/vinyl inserts I used dry for pencil on vellum or moistened for ink
on mylar edits. Very clean. It mops up the ink or graphite with the crumbs.
A yellow type vinyl is also available which is imbibed with an ink volatile
for ink on mylar work.

I wouldn't bear down on them, they were not designed for that. It shouldn't
need more than it's own weight to cut, and the bearings will last much
longer. Bruning's design was dominant as the industry standard. It was sold
under several names.

I wonder about polishing chips in the windshield to prevent running cracks
from getting started? Also, dressing chips in paint with toothpaste and one
of these little motors is worth a try. Rare earth abrasive slurry and one
of these power erasers might speed up hole drilling over the toothpaste.

Great tip. Now, what glass do I have around here that needs a hole in it
that I can experiment on?