This is a part I designed to cover the back of the MKS TFT28 upgrade. It's designed to work with the bevel adapter designed by Michael at Teaching Tech - https://www.thingiverse.com/thing:3371159. I followed Michael's tutorial and upgraded my printer with the touch screen - you can view his video from the link above. The only thing was that I missed the cover I had on the orignal display. So here it is!
It's designed to print without supports. Because of this, you WILL have to clear the screw holes before installing. I left the Wifi port, power port, USB, and SD accessible. I doubt I'll ever use most of those, but it's there if needed. It installs with the oriiginal hardware. It is also "notched" to accomodate mounting onto the 4040 like normal.
To avoid weird little gap infills in the walls, you may want to play with your slicer's perimeter settings to ensure a more efficient print.
Hope you find it useful!
Printed with enough perimeters and top/bottom layers that there is little to no infill. Sliced in Cura 4 with Creawsome mod.
I had to print with a brim to help avoid warping. May not be necessary for most. Besides cleaning the brim off, you will have to clear the single layer that covers the screw holes. This is designed into the model so that the slicer will simply bridge the openings and not require support material. I simply used a small screw driver and punched trhough.
Once it's printed, power down the printer and remove the 2 screws holding the display to the 4040. Unplug the ribbon cable from the back of the TFT28. Remove the 4 screws holding the TFT to the plate. Slip the cover on, and replace the screws. Plug in the ribbon cable, and remount the plate to the 4040. Now you're tidy!
Designed in Fusion 360. It's my goto.