Here are the Fusion 360 files for the main bracket that attaches to the 2020 rail and holds the Quad feeder for the pick-and-place machine. The main bracket also holds the PCB power bus board and mounts directly to the 2020 aluminum extrusion. The spool arm attaches separately to the 2020 rail and includes an M3 set screw to hold the bearing in place. A sprocket then attaches through the bearing using an M5 screw. All files are provided as STLs for easy printing, along with the Fusion 360 files in case you would like to modify the design. The PCB can be purchased in my store, or you can download the PCB design files and have the boards printed yourself.