A tray designed to be mounted on the rear of an MK4S printer (and all Prusa printers with the same back plate)

Face it, there is never enough storage for all the things you use on your printer: spare hot ends, tools, grease, filament clips, files, shears, etc.

Although trays exist to mount on the side T20 slots that can be used with Prusa printers, there were no trays published on any site that could mount on the backplate of the cartesian (bed slinger) Prusa printers. Thus, this project was born.

It consists of a simple tray design with an adapter that lets it mount to the back of an MK4/S printer.

The parts fit together snugly, so you will need to push to snap it in place. Make certain you push it down all the way so it is flush, There are only a couple mm of clearance between the top of tray and the bottom of the bed. I printed mine in PETG which works well.