This remix was done to cap one end since I only carry one toothbrush when I travel and replace the snap connectors with magnets. The magnets are press fit sized for 6mm x 3mm, these seem to be strong enough to keep the top closed without making it difficult to open.

This remix was done using Tinker CAD so unfortunately there are some artifacts of the STL import.

Top and case printed at the same time, single color PLA Basic, no supports, Textured PEI plate. Received a warning from Bambu slicer that indicated an unsupported cantalever which is the clip in the top. Printed without supports and after the print squeezed the clip together slightly and it freed it up to allow the toothbrush head to snap in place.

The final print fits like a glove and doesn't even rattle.

To get the magents installed with the right polarity, insert two magnets into the case body. This is easiest done by putting the magent onto a flat surface and pushing the case down onto the magnet, once press fitted, put the other two magents on top of those and force the case parts together, this will seat the magnets in the right direction.