Brick train bogey system

This is a set of custom designed parts to let you create bogeys for brick train cars. The couplers are intended to fit D10 x 3mm round magnets ( https://store.bambulab.com/products/round-magnet?id=41828764287091 ), but the project files are included, for possible modification to fit different size magnets. It's also possible to connect cars without magnets, with the included magnetless “coupling bar”. One extra part is needed for assembly. You need to add an injection molded (official) techn