Why

I have a bunch of Reach Access Flosser (https://www.amazon.com/Reach-9655-Access-Flosser/dp/B0017TU2HE) heads, but I lost the actual stick. Rather than go and buy a replacement stick, I just designed my own.

I recommend printing in something you don't mind putting in your mouth, like tglase or PET(g).

This design incorporates a pick at the end of the stick (think reusable toothpick). Your mileage may vary on how useful it is depending on how fine your printer can print and the strength of your material.

It may be a pretty tight fit when you put the flosser piece in the first time - rock it back and forth and it'll sit in eventually. Better too tight than fall out in your mouth when using, though I suspect the model can be tweaked for better tolerances.

If you're worried about bacteria, you can always print a new one every few weeks. It's a quick print (<20 minutes) and uses a negligible amount of material when printed with <=20% infill.

Remixing:

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/6eIKdBLsLgI