Intanglible walls

[The Asylum]

So I'm up to speed with custom textures and stuff, but what I really want to know is if it's at all possible to make a "solid" that you can see but can pass through freely.

 

[Armadillo of Doom]

Transform the wall into func_brush, and set 'solidity' to 1.

 

[R3dRuM]

Or make func_brush and render mode: Not solid i think..