I started my sample by sandblasting with an inexpensive Sears nozzle and a small shop compressor. Tomorrow I'm renting the large comercial rig and will continue on sample. A few questions came up, the softer wood blasted right down yet the harder grain remained raised along the letter edge. This app...

I'm sandblasting 30 clear heart redwood signs, client supplied sign blanks are 1" thick and vary in size from 18"x18" - 36"x60". Client supplied rubber mask is pre-cut / weeded, 1/16" thick, depth of blasting to be 1/4" deep. Sandblasting with rental equipment, 130...