Took the plans that my brother drafted up in AutoCAD, and printed out via plotter in 1:1 scale, and taped them down to a sheet of 3/4" plywood. The design was laid out so that each side of the floor was the same, allowing space for the centre transmission tunnel, which allowed the same fixture to be used for both sides, essentially flipping one of the completed sections over and linking them together with additional substructure for centre tunnel.
Proceeded to rip some additional 3/4" plywood into 3" strips that were then screwed around the inside and outside perimeter of the drawing points where tubes will be laid.
Using the measurements from the drawing, fired up the bandsaw and got started cutting tubing, and laid them out in the fixture one by one, making sure the joints are tight with optimal gaps for welding.
Once the first complete set of tubes were constructed, started with the second set for the opposite side.
Two complete sets of tubes, ready to be welded up.
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