Thank you, I will have to look into finding some of those for the bottom supports and anything else I need. Will make it a lot easier if I can "weld" the supports on the risers rather than try to make them stay with rope, cotter pins and other means.

Will let you know when I get a couple made. If you were to get some what would you want them made out of? My plan is not round ones but either squares or octagons. A lot easier to do with my hand rod benders than even attempting a round pot. PVC can be done either shape also, I think. I think I can make rounds out of pipe but not sure how strong that flexible stuff would be for upper sections.