~40 minute prints each, this face shield print resolves the gap issue over the shield with Prusa Face Shield RC3 while still conforming to the shape of the wearers head. By raising the position of the elastic band relative to the print surface we have tilted the face shield out ~11 degrees allowing clearance for the N95 masks. I would not argue this is a superior design but through 10+ iterations with the health care workers in this area this is the design they released for production and it is a much quicker and easier print to nest on any 200^3 mm size printer.

Designed to hold a Comb Binder Cover sheet, and 280.2mm(~13") 6-24mm wide elastic strap these masks run ~$0.60/each. We are using them for rural hospitals, EMTs, Police, and Fire Fighters in the Central US. We elected to use a simple pattern to give it more mounting points than a 3 hole punch provides while still making the procedure of replacing it easy for the law enforcement, and medical professionals using them in the coming months.

additionally the exterior surfaces of the print are simplified to reduce cleaning challenges for first responders and medical professionals.

We are currently running ~160/day on x7 Cr10 and I3 printers.

I wish you all the best of luck out there in the coming days.

The Shields are below:
https://www.amazon.com/Fellowes-Crystals-Binding-Covers-5204303/dp/B0196JUY7Y/ref=sr_1_4?dchild=1&keywords=plastic+Cover+Sheet&qid=1586093853&sr=8-4

We are using the following elastic band again cut to ~13" 280.2mm:
https://www.amazon.com/200-Yards-Length-Braided-Elastic-Stretch/dp/B086HQT1XL/ref=sr_1_1_sspa?dchild=1&keywords=1%2F4%22+elastic+band&qid=1585930887&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyMzJSQlJCTU9BSldPJmVuY3J5cHRlZElkPUEwOTE1Njc0MVUwOU1OWUdXM0EyUyZlbmNyeXB0ZWRBZElkPUEwMTkzMjI5MUJEQUlMMVJTWk42RiZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

Model files are present for a 0.25" ~6.35mm elastic band version or a 0.5" ~12.7mm elastic band. The larger band is recommended for people working outdoors as the lighter band is more easily disheveled in windy conditions, while the smaller band makes for a much more comfortable shield and reduces the unit costs of supplying them.

Print instructions

.stl files included for 200x200 (x3), 300x300 x4) and 500x500 (x11)

I typically run 1 perimeter/100% rectilinear infill with a 0.4mm nozzle on 0.2mm layer heights, but I don't presume to the preeminent expert on this forum.