see blocks through skybox

[Will]

http://i.imgur.com/liFowqO.jpg
http://i.imgur.com/jJZbGfw.jpg

In my map I've used skyboxes to separate jumps and it's possible to see certain blocks that I pasted in from ctf_ballin_sky, I think they were originally func_illusionary entities
anyone know how to fix this?

[Kendrick.]

use skip/hint brush or areportal brush



16 mins and 25 mins