I split the model into two pieces so that the inner side is as smooth as possible. Glued together with some drops of CA glue.
The latch on the bottom half needs to be wiggled a bit after printing so it can move freely. It has a little .2mm gap, so it should come loose pretty easy.
I printed it in PETG
Nozzle diameter: 0.4mm
Layer height: 0.2mm
The author marked this model as their own original creation.