[Kit Gerhart]

Originally Posted by ducttapedude

I'm not too great on terminology, but we just use the square aluminum tubing, we only have two stages this year, and the final stage is the exact thickness of the black "snake" as we have come to call it (thing used for wires)
unfortunetly I do not know the exact dimensions...sry, but yeah, the is very little space between stages, just enough for a chain, luckily we've been blessed with fantastic facilities : )

The inner section is 1/8 wall thickness aluminum tube that's 1 inch square on the outside. The outer section is 1/8 inch wall, 2 1/2 square Al tube (with lots of lightening holes).