90 Degree Joining Plate for 2020 extrusion and M3 screws

prusaprinters

<p>There are a few 90 degree joining plates out there, with holes sized for M5 screws. I wanted to use these 3D printed T-nuts (https://www.thingiverse.com/thing:3050607) that use M3 screws, but the M5-sized holes on the joining plate were almost as wide as the head of an M3 screw.</p><p>I used the .step file here (https://grabcad.com/library/v-slot-90-degree-joining-plate-1) and shrunk the hole sizes to be 3.1mm, which is just about perfect for an M3 screw to slide smoothly through.</p><p>In the slicer, if you cut the plate so it is 2mm thick, it will be perfect for 8mm length screws, though at a loss of strength. Otherwise 10mm length screws should fit the default 4mm thickness.</p>