Problem[edit | edit source]
Surgical masks often have a simple design in which the fit is not good. To a lesser extent, this happens with a number of FFP2/N95 masks which have a poor fit. On twitter, user "fitmyworld" seems to have knowledge & experience.
The lack of fit allows aerosols to leak in and out, which reduces their effectiveness. In addition, moisture fogs glasses.
Background[edit | edit source]
Therefore, the initiative Fix The Mask designed an add-on to improve the fit. On that website there is an opensource design (link).
In this case, the ear saver concept, invented and popularized by the maker movement during the first waves of Covid, is also used, generally using 3D printing.
Design number 1: elastic bands[edit | edit source]
- Bring text and photos.
- Elements needed: 3 rings of elastic, and an ear saver. The ear saver could be made from recycled bottle plastic.
- Not useful if you need to put it on & take it off frequently.
- "3 shaped" curve between cheekbones and nose still leave leakaging. See below.
Ideas for improvement:
- To make it easier to put on and off the frame could be more rigid. See the other designs below.
- The "3 shaped" gap mentioned above is avoided by fixthemask using extra ridges, on left and right, that fill up that gap. How could we make something personal for each face, yet simple to do at home?
- First, get the shape of the gap using a "contour gauge". The simplest version is with cooking sticks (1-2 mm diameter) run through a the holes of a strip of cardboard. Done between the cheekbones, this would give us the "3 shape" for that particular person.
- Now we'd need to create the filler and make sure it stays without being displaced towards the eyes which would make it both useless & uncomfortable. Testing & iterative redesign needed.
Other designs[edit | edit source]
- Bring Stefan's
- Wire: link to Emilio's page. Bring text and photos?
- Cloth and buttons.
- Shoelaces like shoes.
Improve this page[edit | edit source]
- Join this page to the ZeroCovid set as masks and as projects... category practical ideas.