ciallkennett
Strata Poster
With a new Garry's Mod addon, you can now build proper coasters. It's basic at the moment it seems, but for any GMod's it might be worth looking at. The link below also includes a video:
http://www.facepunch.com/showthread.php?t=1200443&p=36927245
http://www.facepunch.com/showthread.php?t=1200443&p=36927245