Is this going to hold

[viperfish]

Originally Posted by sphelps

Without going into too much detail I ran half the frame with half the weight using A36 steel in the size you're planning and you barely get a safety factor of 2, typically for this application I like to see 5 or more. 2" with a .25 wall will give you close to 5 following the same stand design/layout.

HTH

A36 HSS? Dude, where you gettin' steel from?