This is a bumper case for an 11" M1 iPad Pro. (It basically fits a 2018 as well, the speaker holes don't quite line up.) I designed it to fit inside a Magic Keyboard and protect corners/edges, after I shattered the screen on my 2018 dropping it on a corner! 

This tends to be a tough print as it takes the entire X-axis of 250mm bed like my Prusa. Make sure your sheet is clean, any grease on the edges will make it fail. A strong and somewhat flexible filament is a must. I used red Atomic Filaments PETG for this build with a 0.20 layer height and a 0.40 nozzle. Tolerances are fairly tight; be sure to clean out any built-up plastic on the inside edges so that it fits on the iPad correctly. 

There is a support integrated into the model, no supports need to be added. 

Printing onto an mk3s, Prusaslicer will complain that the model doesn't fit on the bed, so enter a scaling factor to make it just a hair smaller (I used 99.98%), and turn off the skirt. 

Updated July 2023 with an improved support for better printing reliability.