You Know I had not thought of that....Maybe use the Black Schedule 80 PVC pipe instead of 40 or like 2" it will make it pretty strong.
After I get all my other Crap done I'm going to try to build one of theese I have a heck of a time with bending down to work on crap anymore. my Knees hate the bending. There also is another satnd that straps to a work bench top I willtry to find that on as well and post a link.