V2: (thinner stamp in the middle)
A user's criticism that the central stamp was too thick prompted me to generate a second version with a thinner central stamp. The rest of the model retains its original size. We have three different Sonicare devices at home, so it fits, but there may be others where it does get stuck. On the other hand, I wanted to make it as tight as possible at the time to prevent the toothbrush from wobbling. Thanks for pointing that out, and sorry for the inconvenience. I also increased the infill to 30% and the perimeter to 5 for the .gcode file.
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