(Before you flame on me i KNOW that the carve tool is very hated in the mapping community) But first: i got a question about breakable glass. As far as i am aware: the only map in the official Tf2 rotation that has breakable glass is arena_watchtower. While listening through the dev commentary (you should do that if you haven't, its quite interesting) i heard that bullet proof glass was to see incomming enemys for both of the teams, Basicly all glass brushes (except watchtower) are bullet proof. So my question is: is it a good idea to use breakable glass? it would make for a slight more unique experience, but it would also confuse those familiar with unbreakable glass. Second the carve tool: I know that you should never use it but does that even count for rectangular shapes? ive tried it on my experimental map and it actually just clips the brush to match the removed part, it doesnt seem to be a problem when a rectangular shape is used. Thank you.