*Updated* Stacked Covid-19 Face Shields (Small, Medium and Large Sizes) No Support

thingiverse

*Update 04/22/2020 When printing stacks of face shields with a gap of 0.24mm, it is best to use a layer height of 0.26mm or below. *Update 04/15/2020 I have added DXF files for: Face_Shield_US_3-Hole-A4_Top Face_Shield_US_3-Hole-A4_Top_and_bttm *Update 04/09/2020 I have added large sizes for both the open and closed designs. *Update 04/08/2020: The hole placement has been corrected in both Face_Shield_US_3-Hole-A4_Top and Face_Shield_US_3-Hole-A4_Top_and_Bttm PDFs. *Update 04/06/2020: I have added medium and small face shields with a closed top to meet US regulations. I have also added stacks of two for test prints. *This face shield design is based on Brian Hirschberger's design which can be found on GRABCAD. Here is a link to the original design: https://grabcad.com/library/covid19-face-shield-hole-punch-v1-1-1 Requirements: 3D Printer Filament (I used PLA) Hole Punch (North American 3-hole punch works the best) Transparent A4 (letter) Film Why Design My Own Face Shield? While printing different face shields (which did not require an elastic band), I kept running into issues when trying to stack the prints without support. So I redesigned a face shield specifically with stackability in mind (as well as printing with PLA). I also included a smaller face shield design for children and young adults. Printing notes: When printing, the side with the fillet should be face down. I have included design files for modification. I have also included separate files where the face shields are in stacks of five, ten and twenty. There is a 0.24mm space between each stacked part. This resulted in the best balance between reducing stringing, while also making the parts easy to separate. To separate, I simply used the scraper which came with my Raise3D Pro2 printer. It took little effort to separate the parts, but I still suggest that you wear gloves. There are included screenshots of my Simplify3D and Cura settings for the Anycubic Predator and screenshots of my Simplify3D settings for the Raise3D Pro2. I have also included factory files and STL's. There are also PDF's which show hole punch placement for the top and bottom or just the top. It is easiest just to use a 3 hole punch on the top and/or bottom (landscape orientation). Slicing note: I found that Simplify3D worked best when slicing for the Raise3D Pro2 printer and Cura worked best when slicing for the Anycubic Predator. Your results may vary. I hope this helps.