Glass Etching/ SandblastingJust curious
David, I tried blasting these with 33psi as recommended by Photobrasive. When I turned the pressure down to 27psi, I got a much nicer etch.....
Probably nothing but the standard inaccuracy of the pressure gage. Minor wear in the nozzle or venturi mixing area can make large differences also.
Harvey's Sub Page When you finally understand it completely... it changes.