Long time no see. I really havent been on these forums for months. and I havent worked on my maps for tf2 for awhile either. a series of unfortunate events and life etc. but thats off topic. I have been looking at mapping again, mostly for L4D; some for TF2. I have been looking through several tutorials and vids again for Hammer and have come across a general consensus about Carving. DONT DO IT. Why? Why is there this hatred for carving? when you carve a door or window into a wall or a pit into a floor or make a room by reducing the tool 32px/ edge and carve or hollow a block for a room then carve openings into it, its much quicker and it groups the blocks made of it together anyway. Also this standard practice for anyone who maps with the UEEditor. (a subtraction editor) Is there some technical aspect with source that no one is explaining here? am I to trust them and not piss on the electric fence as it were.