USB filtered antimicrobial mask exhaust. Work in progress prototype listing with more detail to follow. Still undergoing testing, use with caution.
Designed specifically to help solve the problem of humidity build up and misting when using sealed clear masks.
Basic instructions provided in pdf.
Prototyped on the Eye Cu Smile V2 transparent mask kit using PVC plastic sheet. https://www.thingiverse.com/thing:4598055
Update 2020/11/08: Research indicates that Lifeventure HydroFibre Quick Dry Towel with permanent Polygiene natural silver salt antimicrobial treatment is the best evaporative towel option. https://www.amazon.co.uk/Lifeventure-Unisexs-HydroFibre-Trek-Towel/dp/B084XT58T8 Will update one testing complete.
Now printing mini gyroid mesh at 75% on 0.6mm nozzle by lowering infill flow to 96% and speed to 10mm/s. Must make the PLActive gyroid mesh as fine as possible.
Standard black plastic fans can be used if don't need power indicator and don't want cyberpunk look.
Thread is small and delicate due to part size, when tightening be careful not to go crazy and shear the thread, clamps and seals to PVC sheet without much force.
For high exertion activities, eg factory floor, use 2.
I have no way of testing the viral load of any remaining vapour exhausted to air. Hence it should not be used where accredited PPE is already available in a professional setting eg healthcare. The design is unproven, therefore no guarantee can be provided as to its efficacy to filter viral particles. This is a prototype device intended to aid development of clear mask technology and should be viewed as such.
On-Mask Chemical Modulation of Respiratory Droplets (Nov 2020) https://www.sciencedirect.com/science/article/pii/S259023852030566X#fig1