I read from numerous tutorials that if you have two brushes touching each other that you should add a smaller brush in between and tie it to a func_wall entity. Apparently it helps lower the face count or something. Anyone care to elaborate?
If 2 brushes toutch each other. Than the 2 brushes get sliced to fit the other brush.You dont realy nead the func wall thing everywhere. Someplaces you can simply make a 1 unit big gap wich isnt noticable during gameplay ^^
EXAMPLE of the slicing:
You put 2 cubes next to eachother. One is bigger.
The bigger cube will get sliced up.
One peace will be the same hight and width as the smal cube. The other peaces will just take random slices to ensure the brushes fittin (im bad at explaining this stuff aint i :s)