This is designed to put the metal key and transponder chip in the print while printing. You will have to change to G-Code to pause at the layer before each of the holes is covered. For me they were 26 and 34, but I would recommend checking them yourself in your slicer's preview.

The second photo shows what the key I made this for looks like inside the plastic. If your key is shaped different you will have to change the model.

Ignore the seam in the first photo, that was error on my part that has been fixed.

Use 100% infill

No supports