The Doorframe instance is not working for me: It creates a nodraw block in the middle of the door where you can`t pass. There is also no instance of a complete door with frame. But how can you create good-looking doors then? I tried copying the func_detail from "ZooMechanics" into my map, but I seems it causes problems for other people.

BrainstoneX wrote:
The Doorframe instance is not working for me: It creates a nodraw block in the middle of the door where you can`t pass. There is also no instance of a complete door with frame. But how can you create good-looking doors then? I tried copying the func_detail from "ZooMechanics" into my map, but I seems it causes problems for other people.

The black brush is there because the instance is for a linked portal door.

I have seen the black brushes inside doors usually associated with func_areportalwindows. The idea is the brush is faded in and fully enabled when you are far away from the door or the door is closed. My guess is the instance is supposed to have some input/replacement in order to link the brush to the appropriate door entity. Or it could be meant to be used with a linked portal thing like Omnicoder said. You can edit the instance to fix it or just remove it and add your own door to the instance.

Quite honestly I think most of the door instances VALVe provided are somewhat useless. I just copied the arch brush and used it to make my own prefabs (not instances, no point in overcomplicating things). Plus, I use my own func_areaportals that are opened by the door (OnOpen) and closed by the door (OnFullyClosed).

Simplifies things a lot for me.