I have 2 of the HFT tripods and 2 of the single post type.
I believe they all use 1 1/4" ACME rod.
look here as well as McMaster and Enco
http://roton.com/Mating_Components.aspx?family=7059474
Check this thread also
http://www.garagejournal.com/forum/showthread.php?t=184890&showall=1
I do alot of square flat work so I welded 1" angle iron on one corner so I have a perfect square edge to clamp the work into.
Saves a TON of time.
I also used reciever hitch for the bench grinder and vise.
I attached a couple of drawers underneath by tapping 1/4" x 20 holes from the...