Linhof Technika III 3D printed lens board

I don’t have an STL file, but I have had lensboards that fit a Technika III. They are (from my notes + memory) about 93mm wide, 99mm high, about the same thickness as a Technika IV board (whatever that is maybe 1.5-2mm or so), with a small notch a few mm wide at the bottom center, and a very shallow circular recess on the back around the lens hole to fit a felt light trap on the camera standard.

The circular recess probably isn’t really needed and is only roughly the depth of a sheet of paper. One could make the boards from flat metal or wood stock, or basically design a STL file from the dimensions approx 93 x 99 x 1.5-2mm, plus the lens mounting hole and small notch at bottom.