Is there a reason that the crossbar needs to be as heavy as chain link fence pipe [looks to be what most instructables use] ?
Could you not use 2x2 stock for it?
It appears to my non-engineering mind that all it does is keep the tripods stable and at the correct distance apart. The weight loading is nearly directly downward at the ends under the tripod points.
All weight/force would seem to be on the 2x2 legs...
[responses ASAP would be appreciated.... it's a beautiful day here, I've got clean 2x4s out the ying-yang, and a ferocious Jones to hang the new Chameleon!]
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