COVID 19 face detector virus crown (no elastic required)

https://www.instagram.com/saginau3d/

https://youtu.be/5LWsvnXgYUc

https://youtu.be/6PGoUK1Ne-E

It is proven, its main difference between those that are being printed is YOUR SYSTEM. ADJUSTMENT SYSTEM (ALL IN ONE PRINT), I have increased the margin of contact with the forehead FOR MORE COMFORT. You don't need a support structure to hold the pins, try to find a balance between comfort and speed of printing, I ask you please to suggest me remixes, changes, or anything to improve it. THE ADJUSTMENT SYSTEM IS VERY SAFE. It consists of a tension relief between ratchet steps, in order to compensate for intermediate measures. The second model, in my opinion is better with respect to hygiene, I have taken into account the NON EXPOSURE OF THE CONTAINER FRAME of the acetate, so that to hold it it is necessary to drill it with a hot screwdriver on both sides (slot 18x2mm approx) with a separation of 237mm. It is a little more laborious to assemble, but perhaps it is worth doing so, since there are no HARD TO CLEAN CORNERS.

I have used as a transparent sheet 8lts table water cans, nestle, hermida, x, two very generous sheets of surface each, and if we use the lower edge as part of the mask WE ARE GETTING A MORE HYGIENIC VISOR THAN 3D PRINTING