For Heat insert practice

This is a test piece for training heat inserts.

The hole diameter is set to exactly Φ4, which may result in a narrower output in the print setting.
In that case, please extend it with a drill of Φ4

Knurled insert nut M3 x 4mm L x 5mm OD x4 piece

Printer:
Snapmaker J1
(I have listed it here because there is no J1 in the selections)