22Mar

Covid-19: Sterilizable 3D Printed Facial Shield

There are several files on the Web that can be printed on a Facial Protection Shield, Joseph PRUSA’s solution is one of the most successful.
The Joseph PRUSA’s screen uses 27 grams of material and has small details that are not easily printed with materials that are sterilizable such as PEI (Ultem) or PPSU.

Sterilizable Facial Shield

I have redesigned a Facial shield that can be printed more easily in PEI – PPSU, 35% faster and more economical in material: 18 gr instead of 27 gr of material, important when you know the price per kg of the PEI in filament – between 200 and 300€… The printed part costs about 4€ Ex VAT of PEI material.

Covid19 mask

Print Facial Shields…

You have access to a High Temperature 3D printer, download the zip and print the screen support in PEI.

If you have a standard printer, you can print it in PLA, PETG, ABS or other, the parts will then be for single use and will not be sterilizable, better than nothing.

Download the zip containing files here (in STEP, STL, DXF, PDF format…)

This is still a beta version in the process of validation, there will be modifications and evolutions according to user feedback).

In the Zip there are 7 files :

Covid19-00-Temp.stp and STL : files, to print masks without temperature marking on the sides.

Covid19 sans marquage

Covid19-00-PEI9085.stp and STL: files for printing screens with sterilization limit temperature marking (150°C)

Covid19-PEI 9085

MaskPolycarbonate500microns.dxf, AI and PDF: DXF (Autocad) and AI (Adobe Illustrator) screen cutout files and PDF, used by a cutting plotter.
You can print this file at scale 1 (240mmx240mm make a montage with 2 A4 sheets). Cut the PolyCarbonate sheet (or other transparent film) 200 to 500 microns thick with scissors or cutter.
The holes can be drilled with à 5.00mm diameter punch or a pair of punch.

Face Polycarbonate

Don’t forget

Keep in mind that studies have shown that the virus can survive on plastic for 48 to 90 hours and that not all thermoplastics can be easily sterilized after use.

I repeat: If you cannot print in PEI or PPSU (there are very few machines capable of printing these materials), the printed masks must be single-use only, talk to the health services before providing them, they may have ideas or solutions! 
Don’t create more problems for those who work so hard to protect us and care for the sick persons.

Print Settings

Approximately 1h30 of printing per piece, to be validated by a test on your machine:

PEI 9085 : Bed 180°C, Nozzle 340/350°C, Chamber 160/170°C, Nozzle 0.60, Layer thickness 0.30, 3 loops
PEI 1010 : Bed 210°C, Nozzle 360/370°C, Chamber 200/210°C, Nozzle 0.60, Layer thickness 0.30, 3 loops
PPSU : Bed 230°C, Nozzle 380/390°C, Chamber 220°C, Nozzle 0.60, Layer thickness 0.30, 3 loops.
Other materials : Your standard temperature settings, 3 loops, layer thickness according to your nozzle diameter (layer thickness = 1/2 nozzle diameter usually works very well).

Finally…

I am well aware that this is a drop in the bucket compared to the real needs of our health services but if it allows us to equip some Hospitals…

If you have questions or need files in other formats, contact me : pboichut[at]qualup.com

You have the right to use the files as you see fit, provided :

  • No commercial use, you can only charge your customers for the cost of materials and power consumption of the printer. The purpose is to help the health services, not to make money on their backs .
  • Comply with the terms of the CC BY-NC-S license

This work is licensed under a
Creative Commons (4.0 International License)

Attribution – Pas d’Utilisation Commerciale – Partage dans les Mêmes Conditions
CC BY-NC-S

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