Covid-19 Face shield frame.

thingiverse

This one folds flat for easier printer floor plan use. Make sure to adjust your extrude setting, as poor layer adhesion is often due to a sliced nozzle diameter that's too small. Set your correct nozzle size in the hardware and then adjust an actual extrusion calculation slightly higher, i.e., 0.42 instead of 0.4. Good luck and be safe. A 0.3mm layer height produces great results with PLA+ and regular PLA. After printing, use sharp side cutters to split the visible knuckle joint printing supports and then snap the hidden ones open with some pressure. File or use an edge deburring tool to remove any sticking out bits. Visor holes should be 5mm. You can make visors from soft drink bottle plastic or laminating pouches. If you use laminating pouches, feed each one into the opening of the pouch as it runs through the laminator. Cut the curved surface to the visor pin positions with minimal wastage. For long wear, pin the arms forward and apply a sticky strip of draught seal around the inside. Use Ninjaflex or hat elastic for the strap, with plenty of holes to lock in place by friction and the option to pin back through the loops. Be sure to wash and disinfect before offering these face shields to any emergency services. Graham The folding feet make these face shields adaptable to different face sizes without scaling. Don't scale smaller unless you're using a nozzle smaller than 0.4, as the snap supports for the bearings will fail. 9 level stacker version added on April 3, 2020: Increased bond between stack members slightly, as they could come apart during printing in the first version.