I just went ahead and got it into a P1 template for any of the 3mm thick materials. This includes all the acrylic colors, hardboard, delrin and one of the bamboo (US hub). The 4mm single layer cardboard more than likely also has enough give to fit together off this file.
Notes: I increased the depth of the screw paths 2mm. I had to adjust the scaling after importing the original .dxf into illustrator and based the size on screw holes and the proper spacing for a 3mm thick material.
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