3D Printed Face Shield / face Guard frame. Just add an A4 Sized sheet (anything that is 8.5inches wide and less than 1mm will slot in) of transparency film and a 1/4-1/2 inch strap and ya good to go. Prints fast with minimun material usage, should be able to print each one in less than an hour. 

Noticed there was a major shortage in face masks / face shields. However most of the ones out there required thick laser cut plexiglass that is a bit hard to get and a real bottleneck for mass production. So i invented this frame to solve that problem.

So all you do is get a overhead projector sheet, that are commonly found in schools and school supplies or also know as Transparency film. Slide it through the slot and either tape it in place or let friction hold it. Next just run some 1/4-1/2 inch straps using whatever you have available and there ya go. If ya want to be extra comfortable add a bit of foam padding to the inside. Slot accepts up to 1mm thick film Use 1/4-1/2 inch nylon or elastic for the strap but anything that fits in the slot should be fine.