Naomi Wu, from Shenzen, who's made many 3D-printed wearables, says that 3D printing masks doesn't work. Not flexible enough and can't get a good air seal.[1]<p>Face shields for medical workers, though - those 3D print just fine.<p>[1] <a href="https://twitter.com/RealSexyCyborg" rel="nofollow">https://twitter.com/RealSexyCyborg</a>
More info here: <a href="https://copper3d.com/hackthepandemic/" rel="nofollow">https://copper3d.com/hackthepandemic/</a><p>They suggest heating it up (to soften the plastic) and pressing it against your face to ensure a good fit. Seems unlikely that this would actually result in a perfect fit, but at least it's better than nothing.<p>Also, the claim that it's an "open-source" mask is somewhat soured by the fact that they appear to have patented it.
I realize this is a best effort kind of thing so maybe these questions aren't in the scope but:<p>1. Is the intention that the mask be disinfected after wearing it?<p>2. In assembly instruction #5, it says "If you use a filter...". Why would someone use this without a filter?<p>3. Is there an advantage to this over buying a cartridge type construction mask?
I could print some of these, but where would I get the circular inserts?<p>Also it would be great if this could be modified to be broken down into smaller pieces, as it stands I don’t think it would fit on most home 3D printer beds.
To let air pass the filter easier, bigger surface is encouraged - bigger area, for the same pressure difference less flow per unit area. Why not to have two circular filters, on each side of the mask?
Honestly, this looks like profiteering in a crisis to help sell their filters as this doesn’t accept the industry standard sized filters made by 3M, et al.