Frame of the case designed for ABS, the pattern insert for TPU.
Use snug supports for the frame.
Used this nice and convenient plugin for Fusion 360 to create the pattern:
This is the Voronoi add-in for Fusion 360 // By @hanskellner
P.S.: Didn't add a holder for the :( pen because we lost it.
I added the Fusion files if you still have one so you can remix it with a pen holder or if you just want to fine tune the clearances…
The author marked this model as their own original creation.