DIY "surgical" mask

This is a very simple DIY "surgical" mask.

DISCLAIMERS:
This is not a medical device. I am not a medical person.
There are no guarantees on the effectiveness of this stopping you from getting the corona-virus or transmitting it.

It may do some good if:
- it reminds you not to touch your face
- it captures some of your cough
- it stops some of the virus if somebody coughs near you
- it reminds others to keep their distance.
- if you use this mask instead of a real surgical mask and that real mask goes and saves the life of medical person who needed it

required:
- two prints of the side piece DIY_surgical_mask_r2_200329f.stl
- one roughly 10 inch x 11 inch paper towel (254 mm x 279.4 mm)
--- perhaps other materials may work better: shop towel, micro fiber cloth???
- rubber bands (I use 4 no 32, 3 inch x 1/8 inch rubber bands)

assembly:
- loop the rubber bands together to form a chain
- attach rubber band chain to first side piece
--- insert one end of rubber ba