This is just a test, once I get my custom fgd sorted out better I'll release it [the fgd].

In hammer:

fgd currently supports:
door
switch
button
gel
funnel
laser and receiver

Will add lightbridge soon.

Upload to the download DB if you please.

If your looking for a working version with steps, check out this:

http://forums.tf2maps.net/showthread.php?t=16903

(not my guide, but some googling does wonders)

Time for some "Competitive testing initiative" anyone?