Can you use extruded Al tubing?
I see the movie of extruding beams into a steel square tube. Why not aluminum? It conducts heat better, and some Al tubing has square corners [instead of rounded]. Yes, I see the pics of the extruded beams are not perfectly filling out the shape, so square corners may be never filled out. But the question remains . . . is Al tubing viable?
extrusionHDPE
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