You can learn something everyday !

Despite using what I thought was adequately thick material for the legs, in reality they acted like giant springs> With heavy hand pressure I could make the tube bounce up and down by 4 inches.

It seemed crazy, but that' s what the geometry and material produced. I decided to go with 1/2 pipe fittings to try and get a good structural integrity... I think it will work!
Mobile: Gary Overman