I bought some glass from glass cages for my next tank and thought itid be fun to grind bevel and polish the edges myself. I was very Careful. used a thermocouple did a lot of hand sanding spent all morning squaring, beveling Sanding and polishing the front panel. I went to grab the next piece and noticed this crack I must have bumped into it and clanked the two pieces together #*=?~}_|]!!!!!!