An aluminum extrusion bracket I have designed for a CNC Mill that I'm building. This bracket is used to connect 2020 extrusion to 2040 extrusion. It uses M5x10mm bolts for mounting the bottom of it (side with 4 holes) to the 2040 extrusion and M5x12mm bolts for mounting it to the 2020 extrusion (side with 2 holes). I've been printing my brackets around 80-85% infill for higher strength but adjust infill according to your needs. If you're looking for different size extrusion brackets check out some of my other builds or comment below if there is one you're looking for that I may be able to design up quick. Please share your makes on here I'd like to see how your projects turn out! If you have any questions or issues please comment below, thanks!