Is it possible to do this...?!

[brisck1]

I need to make a non solid brush which will cast shadows like normal bsp geometry does. It will be a static brush and will never move.

I have tried func_illusionary and func_brush but neither casts lightmap shadows.

Is there any way of achiving this?

 

[WAR_Nuker]

im surprised func_brush wont work for you. if it doesnt cast shadows....overlap it with a brush that is covered in the blocklight texture. and dont use func_illusionary. its obsolete (thats what ive been told). i think its cause func_brush can do the same thing as illusionary....and much more.

 

[Raeven0]

Hmm, func_brush doesn't cast shadows even when it's solid and "Disable Shadows" is set to No. Wonder why.

Go with WAR_Nuker's suggestion.