[R-390] RE: Panel Engravings and bead blasting

[Laird Tom N]

4) Bead blasting.....am experimenting with that, but it has its own 
problems.  Erosion and panel warpage.
-------------------------------------

Glass bead blastng isn't as aggressive as sand, therefore less heat and
warpage.
The 390 panels are thick enough to withstand blasting the engravings
without
warpage. I've done three with no problems. YMMV.

Tom Laird WC9M
Moline, IL.