This box was designed to store a Makins clay extruder. It is sized approx 7" x 4". The walls are 2mm thick

You can find a model for an extruder drill attachment here
https://cults3d.com/en/3d-model/home/extruder-drill-attachment-tool-for-polymer-clay-horsebytes

Check out my 3D Box Maker app for more cool boxes
https://apps.apple.com/ca/app/3d-box-maker/id1607771697

These can be printed with any layer height, draft layer height of 0.24 or even 0.3mm will print faster