I'm one of the creators behind Totem -- that was actually the original idea that started it all, seeing the difficulty in assembling electronics boards in our o

I'm one of the creators behind Totem -- that was actually the original idea that started it all, seeing the difficulty in assembling electronics boards in our own projects made us think if there could be a better way around it. We chose 10mm as a basis for our H-shaped beams and boards, and designed adjustable metal brackets to have an easy way to join them together with M3 bolts. My personal favourite feature is that the holes in beams are just slightly concave shape, so it provides enough friction to hold brackets in place while putting in bolts. We also provide STL, STEP and SketchUp files of our parts here https://totemmaker.net/wiki/parts-library/ https://totemmaker.net/wiki/parts-library/ for those who want to include it in their designs or 3d print it themselves.