it's essentially a brakedrum forge, it's a tire rim, with 2" black steel pipe for connectors welded in and a $10 hair dryer. I used 1/8" sheet with holes drilled in it with the 6" black pipe nipple welded to it, the "T" screws on it. The legs are pipes my bro in law had with rebar inserted in it. It's completely breakdownable and can fit in my trunk.
so:
1-tire rim
2- 2" black pipe 6" nipples
1- "T"
1- 24" long 2" pipe with one side threaded
3- pieces rebar
3- 6" pieces square tubing or pipe for the rebar to go into.
1- piece 1/8" sheet metal that fits inside rim
drill holes in center of 1/8" sheet for the air to go through
then weld sheet into rim
weld 1- 6" nipple to sheet with holes centered on pipe
weld 6" tubing for leg inserts
then assemble....