Rubber band adjuster for face mask

Being in the middle of a pandemic, most people are required or at least asked to wear mouth and nose covering masks in public.

To hold the mask in place, we often use simple 5mm oder 8mm rubber bands (even if they are hard to get lately or sell for unethically high prices).

This little and very simple piece of plastic can be used to easily adjust the length of the rubber band to make the mask sit tightly and comfortably. A docent of them print in less than an hour, so we as makers can produce them in large quantities and spread them to people around us.

My proposal for a face mask clip that can hold any kind of filter material with a magnet based quick release mechanism can be found here:
https://www.prusaprinters.org/prints/30677-face-mask-clips-for-one-time-material-and-fabric-m

Since it is important have the prints meet the designed dimensions precisely for making the clips work best, I have uploaded a second version for the 5mm clip (which is more critical in terms of dimensions) for budget printers (like my Ender3Pro), which tend to make the slots about 0.3 smaller than they should be. Printed on a Prusa i3 Mk3S, the parts come out with the designed dimensions directly, so for these you can use the normal 5mm file.

Have fun doing something good for our society, stay safe and stay healthy!

Print instructions

Category: Other Summary

Printer Brand: Prusa

Printer: I3 MK3S

Rafts: No

Supports: No

Resolution: 0.15mm layer height at 0.4mm nozzle

Infill: 100%

Filament: Prusament PETG orange

Notes:

I have printed this in PETG as I really like that material for functional parts. But I trust that this thing will also come out and work well when printed in PLA.