Modular Cereal Dry Box/Spool Rack

I modified mker17's Triangle Modular Spool Rack to use ¾" EMT conduit for more strength. His original frame pieces are sturdy enough, but found dowel rods load capacity to not meet my needs. Rather than add more supports, I went with a more rigid shelf material. The vertical supports are still ¾" dowel rods. Mine easily supports 10 fully loaded dry boxes or about 14-15 full spools on a 3¾ ft span without any noticeable sagging. This can be pushed a bit further, but I've not tested it yet. EMT uses trade sizing, so ¾" is a bit misleading. The actual outer diameter is .922", so the frame models have been adjusted accordingly. I've made the tolerances tight for a more secure fit. There are test prints included to check sizing. The frame's support tier has slightly wider holes for the conduit, so that it can easily slide into place, even if painted. I've left negative parts centered on each hole, which can be used to easily adjust to fit your machine or