I've made several designs to hang stuff off my MK4 and MK3 printer frames, this is a general purpose bracket to attach your own designs. Like the Prusa supplied filament bracket, this snaps on with a satisfying click.
This hole in these brackets are designed to receive the threaded end of M3 screws, use two or more for stability of your item.
Note: the normal printheads will clear this bracket if moved up near the top of Z, if you attach something that protrudes forward you may cause issues.
Holes to self thread M3 screws are in a 8mm grid (center-to-center) on the top face and back face. Holes have 9mm depth and beveled to make thread cutting easier.
The author marked this model as their own original creation.