[dsirovica]

We just built our Pyramid in 1/2 day wit cheap 1.67 steel pipe - it is a rock solid monster. And we got the steel pipe from a local supplier at cost ($1.80/ft) and a genius mentor welded it for us and had all the kids do a bit of welding. Our partner Highshool took 4 days of hard labor to build the FRC home-version (with U bolts) and they are tearing their hair out with that wobbly contraption!

Advice: don't build the horrible U-bolt contraption. Get a professional welder to help you build a proper pyramid. You will need a plasma cutter for the gusset plates, and a mig welder for the pipes.

Dean