Summary

Wearing a mouth-nose guard can be very annoying in the long run. Especially when the mask (as with many models) is fixed behind the ears. There are a large number of print files on the net which are intended to remedy such problems. Most files are simple, thin strips with small hooks over which the mask can be attached over the neck. The idea itself is really great. Unfortunately, it can happen that the plastic strip on the back of the neck rubs when worn for a longer period of time. That's why I designed a mold with which the "neck straps" can be cast from flexible silicone. To ensure the best possible stability, I used the TFC silicone rubber type 3 from Troll Factory. Of course, you can use any molding compound. I have achieved the best results with the material mentioned.