This is a design to allow for high throughput small scale production of protective face shields for healthcare workers and others exposed hazardous materials. Fits comfortably and secure on any head size. US/EU style hole punch can be used for adding holes to the transparent sheet. UPDATE v20 I modified and simplified the brackets for easier assembly and to allow vertical stacking. The brackets can easily be separated with a flat head screwdriver. X2,X4,X8 vertical stacked model added, intended for 0.3mm layer thickness and 0.6mm extrusion width(0.4mm nozzle). I decided to use zip ties as the main component and designed some simple brackets to hold the transparent sheet. This reduces print time to only about 15 minutes/set and enables a stacked plate of parts. Basically 1 printer can produce 20-50 full visors/day given you have enough zip ties and transparent sheets. Suggest printing in PLA or PETG. Zip ties are 4.8mm X 360mm. The design should fit any head size and has a fairly comfortable and secure fit. Possibilities for sterilization not investigated so far. NOTE, the design is a WORK IN PROGRESS and has very limited real world testing!!! I designed this for a Swedish hole punch with a 2 hole footprint, and it turns out this is a purely Swedish thing and the rest of the world uses "single hole" punches. I added a universal bracket that should fit any 6mm diameter hole enabling any punched sheets. For more info on different sheets and dxf for laser cutting check out the great work at https://www.youmagine.com/designs/protective-visor-by-3dverkstan/.