COVID-19 PPE protection Face Shield

thingiverse

Revision - 4/24 - I updated the design based on feedback, which showed that the films were dislodging themselves from the frames and defeating their purpose. To address this issue, I modified the outer pegs into little Tees, which prevent any accidental malfunctions. Additionally, I changed the keepers on the ends to parallel the arc and created a thinner gap to improve contact and influence the films. The rounded profile was incorporated into all major parts, resulting in a more comfortable fit and less sanding when prints are completed. Another valuable insight gained from someone else's design is that these shields can be stacked to print multiple units on my 200mm bed. I created four stacks and ten stacks, printing the four stack several times before moving to the ten stack configuration from then on. To ensure a secure hold, I recommend printing twice as many Clasps as there are frames and positioning them in the middle area. A skirt/brim can be used to tie everything together. I am considering slicing the stacked files in S3D, which would allow me to slow down the print speed for the first layer of each frame using the Variable Settings Wizard. This way, all users would need to do is adjust their Flow rate on their LCD when the print begins. Edit - 4/11 - Rev 2 worked so well that I decided to name it accordingly and discard previous versions. I have found that printing with one brim a few mm away from the model uses minimal materials and prints quickly, allowing for many protective face shields to be created from a single kilogram of filament. The rounded profile ensures a comfortable fit while minimizing post-processing needs. Edit - 4/09/20 - I made a Rev 2 version with a chamfered edge around the bands in an effort to reduce post-processing requirements, as previously needed filing and sanding to soften off the edges for a more comfortable wear. This design shares the same footprint as the Reusable Face Shield Frame by CMPresby but aligns the center hanger post with the 11-inch height. I opted to use minimal filament to achieve multiple frames per roll, resulting in slightly over 15 grams of material usage – still allowing for ample PPE production. A link to the Transparency Film used is provided below. Good luck finding prices within a reasonable range; I managed to secure three packs before they sold out shortly after listing. https://www.amazon.com/gp/product/B003V1BPXG/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1