Originally posted by _Ashley_Solo_
when i make a model and test the map in SP, they arnt solid and can walk thought them...will they become solid in MP or do i have to do something to them?
Glad to help, because that's what the forums are for.
All models that you add are not solid. To make them solid you need to create a "CLIP" brush over the model. The clip shader can be found in the system textures. So goto Textures -> System -> clip (it's red with the word clip on it). Apply that shader to a brush over the model.
Just a note though. Some models can be complex and branch off in different directions. Just make more precise clip brushes over those parts.