Improvised Laminate Hole Punch Guide For ISO 828 Face Shield Designs (A4 Sheet)

thingiverse

You're advised to stick with the recommended PETG sheet cut via laser cutter for optimal results. Designed specifically for "DtM-v3 with ISO 838 A4 holes (80 mm apart)", a design currently endorsed by protectourfrontline.org as of April 16, 2020: https://www.prusaprinters.org/prints/28905-dtm-v3-with-iso-838-a4-holes-80-mm-apart/files. However, in a pinch or for testing purposes, if you have access to a laminator and a simple one-hole punch, this guide will help you create an improvised version. Keep in mind that there's no guarantee that laminated sheets are suitable for the job. This method is suggested only when other options are exhausted and PETG sheets and a laser cutter shop are unavailable. If anyone has successfully tested this method in real-world applications, please let me know, and I'll add your endorsement to this guide. To use this improvised method, simply print the PDF sheet at 100% scale. Then cut out each strip and place it into the top of each laminator pouch. Next, feed the sheet into the laminator. Carefully punch out each black hole and test that it securely mounts to the top piece of the faceshield. The top holes should work as intended. You can also use the grey holes for the bottom piece, but I haven't tested this configuration yet. Good luck with this improvised method, and please let me know if you encounter any issues or need further adjustments. This guide was created as part of Melbourne Prusa's COVID-19 effort: https://www.prusaprinters.org/group/covid-face-shields-melbourne-1Q7NDZ0. From my research, the reason to use laser-cut polycarbonate is that it can be sterilized and reused: * "Most people are using A4 laminate paper from supermarkets, while some are using laser-cut polycarbonate board, which can be sterilized and reused," he said. Source: https://www.thestar.com.my/tech/tech-news/2020/03/23/malaysian-3d-printers-produce-face-shields-to-aid-frontliners-in-the-fight-against-covid-19. * Also, 500-micron PETG sheets are preferred over 80-micron laminate sheets due to structural stability, according to Paul Bennetto in the Prusa Face Shield Melbourne group. This can be mitigated by the bottom clip. Other designs using laminators that I found interesting: https://www.instructables.com/id/Face-Shield-Against-COVID-With-Laminator-or-Hair-S/ This design uses a laminator to make the shield, but no 3D printer is required. This guide is based on "Improvised Laminate Hole Punch Guide For Prusa Face Shield RC3 (A4 Sheet)" by me: https://www.thingiverse.com/thing:4260065