DONE! having spent a while trying to figure various things out, I've got it working.
Download now!
Notes:
This isn't technically a release, I still need to fiddle with textures
To install, you know the drill, copy files to relative folder locations
It should match up with valves existing security_fence256. Any major differences I apologise for, and if you tell me them I'll try and fix them before I release officially.
I'll make some different sizes if people really want, but only the same sizes as valve's models.