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

You are recommended to stick to the recommendation of petg sheet that is cut via laser cutter.

Designed for "DtM-v3 with ISO 838 A4 holes (80 mm apart)" (currently recommended by protectourfrontline.org as of 16th April 2020): https://www.prusaprinters.org/prints/28905-dtm-v3-with-iso-838-a4-holes-80-mm-apart/files

However in a pinch (or testing), if you got a laminator and a simple one hole punch, this guide will help you make an improvised version. Also no assurance will be given that laminated sheets is suitable for the job. This is if you have run out of options and do not have petg sheets and a laser cutter shop to do the job and desperately need to produce enough.

If anyone has tested that this is good enough in the field, let me know and I'll put your assurance here.

Usage is simple, print the pdf sheet in 100% scale. Then cut out each strip and place it into the top of each laminator pouch. Then place the sheet into the laminator.

Next punch out each black hole carefully and test that it mounts to the top piece of the faceshield. It should work for the top piece. You can also use the grey holes for the bottom piece, but I have not tested that the bottom holes works.

Good luck and let me know if this works for you or need any adjustments.

This was created as part of Melbourne Prusa Covid effort https://www.prusaprinters.org/group/covid-face-shields-melbourne-1Q7NDZ0

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From online research the reason to use laser cut polycarbs is that it is reusable after sterilisation:

• “Most of the community are getting A4 laminate paper from supermarkets, while some are using laser cut polycarbonate board which can be sterilised 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 500micron petg sheets is preferred over 80micron 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.

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Other design using laminator I found quite interesting

https://www.instructables.com/id/Face-Shield-Against-COVID-With-Laminator-or-Hair-S/

This one uses no 3D printer but just a laminator to make the shield.

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This is based on "Improvised Laminate Hole Punch Guide For Prusa Face Shield RC3 (A4 Sheet)" https://www.thingiverse.com/thing:4260065 by me