Pi sleeve case Ender3 / 2020 frame

Variant of
https://www.thingiverse.com/thing:2887348

because I didn't have all the connecting screws etc. to fit something to the frame, and wanted something which didn't need any.

Modded the original case in blender to add a wide "T" shape - the flat end of the bar sits against the aluminium frame.

Just print a couple of
https://www.thingiverse.com/thing:2880021
and slide them over the attachment to hold the case to the frame.
It's a bit of a tight fit, obviously, so you may nee