I've tried a few toothbrush covers on Thingiverse for my Oral-B CrossAction travel toothbrush but they were either unnecessarily complicated two piece models that seemed prone to break easily or didn't fit well, until I hit on wildcardfox's design.
It did fit my brush nicely as it was but also seemed taller than needed, to I trimmed it down a bit in Meshmixer. In a quart sized travel bag, any tenth of an inch counts!
UPDATE 7/21/21: Same functionality, just some cosmetic changes to round the edges.
Supports: Yes
Resolution: 0.2
Infill: 30%
Filament: Hatchbox PETG
Notes:
I printed it both ways, with the open side facing up or facing the bed. Either way you'll need supports. I kind of liked it better with the open side facing up.
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The author marked this model as their own original creation. Imported from Thingiverse.