RocketRollinSX 2 Posted December 14, 2010 I have a mirror project I want to complete. My blast cabinet is currently set up with 220 grit AO for etching glass. With the 220 AO be heavy enought to cut through the silver backing of the mirror or should I look into some heavier media? Share this post Link to post Share on other sites
MavistaGlass 0 Posted December 14, 2010 The 220 grit will cut through just fine. Share this post Link to post Share on other sites