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Descrição
I had a sign at work I needed to display and I didn't have a good wall space to hang it, so I designed this. It has a slot to hold card stock about 160 x 170 mm.
When I printed it, the tolerances were a little loose. I used one wrap of electrical tape and it was perfect. You could also use epoxy for a permanent solution.
I designed it to print with no supports; the Placard Top and Bottom print upside down and you may need a brim. I printed mine in PLA with 3 walls, 5 tops, 4 bottoms, and 15% cross hatch infill. It used about 346g of filament.
I have the FreeCAD files available on my GitHub