Continuing the discussion from QOTD from Glowforge: Will you accept our 24 Hour Glowforge Challenge?:
The student who built our laser has moved on to working on using lasers to turn industrial waste into consumable fuel.
He has built a man sized contraption to hold a 100W tube vertically. He was going to get a bunch of 80/20, but decided to prototype it with plywood just to get a sense of what will work before buying a bunch of metal.
Well… he tried laminating layers of 1/4" plywood, but they would always slip a little here or there while clamped for the glue to dry. So he added some alignment holes to each piece and slid a rod through the alignment holes with wingnut bolts on each side.
This worked so well, that he moved to 1/8" plywood for more consistency (less chance of voids) and more control over pockets and other contours. He no longer plans to do ANYTHING with metal. This all wood assembly is stronger than the metal would be. And the time to construct layers into parts is very minor.
By taking the “brick wall” approach (each layer is offset from the neighbor layers), this method would allow even a basic Glowforge to assemble a full-size executive desk. Or absolutely anything else. The bigger the easier.