"Michael Horowitz" wrote in message
...
With reference to sandblasting, what is garnet? - Mike

It is a mineral that is very hard, and is one of the more common choices of
grit found on sandpaper.

I'm no expert on sandblasting, but I believe it is only used when the job
calls for very aggressive removal, such as very rusty or heavily painted
THICK steel.

Typically NOT aircraft. :-)
--
Jim in NC