3D printing face shields
Files and printing instructions
We've tested a couple of versions, both seem to work. The Prusa design is a bit bigger, gives more space in front of the face, and is a bit more comfortable. The Verkstan design is smaller, prints faster, and has simpler assembly. We've printed nearly 400 of the Prusa design so far, and are now switching to the Verkstan so that we can make enough to keep up with the demand.
- This is the version we're printing right now
- Click this link to download the files: https://www.youmagine.com/designs/protective-visor-by-3dverkstan
- More info is on their website here: https://3dverkstan.se/protective-visor/
- The version we're working with is the "North America 6 Hole". It should take about an hour to print each one.
- We made models for printing stacks of 5 or 10 with 0.25mm layer height, download those here: https://drive.google.com/open?id=1SuKaXACOYMcIhzNARnCYGFQNpR-FxAwl
- This design is well documented and tested
- They keep the files and instructions well updated on their website here:
- This one generally takes at least 2 hours to print
- The website has careful and useful instructions for 3D printing protective equipment even if you're working with a different design, so check it out regularly.
This was traced from a pair of Halyard SAFEVIEW safety glasses, and consists of a basic 3D printed frame and a lens that threads over the arms of the frame.
- Files for printing the frame and laser cutting or tracing the lens - https://drive.google.com/open?id=1vw9S89jighv_-0u7zoqWyTO9ADDKRnG-
- Instructions for cutting one the Glowforge
- Version 2 of our frame design is here
- STL - https://drive.google.com/open?id=1rOHYWD8Sy0bKQDq271IHdJ2Fntcng-u2
- OnShape - https://cad.onshape.com/documents/d8b42b323cc43869f54e3854/w/47715b639307ce012a2481f7/e/30b7f6f8f9d079623b4a9996
- This version has a flattened top identical to the bottom, making it better for stacking
- Version 1 of our frame design is here
- STL - https://drive.google.com/open?id=1AgoGEGcUSGTl_G37ruSO1zqQ8Mq6zBi_
- OnShape - https://cad.onshape.com/documents/7b9f3f94431351eda363c325/w/3037ca88f8d5c28288b60d5e/e/4250a22d32127294fb863151
- This version has a rounded top, making for a smoother finish which is a bit easier for assembly
- Original design / product is here
Settings are a bit different for each design. We're mostly printing in PLA since we don't have much PETG.
- Settings depend on your setup, follow the handy guide on their website - https://3dverkstan.se/protective-visor/protective-visor-print-guide/
- Generally lots of perimeters and thick layer heights with no infill are what is recommended.
- We advise to also set infill at 100%
- 0.25mm layer height
- 30% infill
- 3 perimeters
- 3 solid top and bottom layers
- no support
- Our advice is to keep checking the Prusa website regularly, and to read the instructions super carefully, especially the part that says PLEASE READ THIS CAREFULLY.
- 0.2mm layer height
- 100% infill
- 5 perimeters
- 5 solid top and bottom layers
- no support
- 40 mm/s print speed
We have a fancy new spreadsheet to keep track of our production, with the number of headbands printed, assembled, delivered, and how many we still have to go.
For anyone using the masks and needing to sanitize / disinfect them, Prusa is conducting tests with the Czech Ministry of Health using different techniques and they have instructions at the link below:
This is also undergoing updates as they learn more, so check it regularly.
Due to printing times of 2 hours per unit and up, we're starting to explore some quicker printing design options. Here are the designs we're testing, and results of those tests for those we've tried.
- Prusa remix "nano"
- printed in about half the time, a bit narrow so less comfortable on the forehead and temples
- Prusa remix "slim"
- better, still pinches on the temples
- Lean shield
- Very thin design looks fragile. Printing instructions resulted in failed print, no working prototype.
- Works well, laser cut shield design needed adjusting. Approved by NHS.
- 2-part Verkstan remix
- not yet tested, should be able to print more on smaller printers
- Prusa remix "rc2x"
- not yet tested
- Prusa remix "imperator"
- not yet tested
- Prusa remix "diadema"
- not yet tested
In the future this will probably expand to have other devices but for now it's all face shields. We have an exemption for the coming lockdown, so we'll be able to pick them up from your house. The protocol is to communicate in advance and arrange a time for pickup, and to leave a bag or box with the sealed prints in front of your house, at the end of your driveway or outside the gate. We can also coordinate sharing of materials in the same way if needed.
In the meantime, keep on printing, and limit contact with each other as much as possible, practice social distancing, respect #kedacas and shelter in place rules, and stay healthy. And wash your hands again and again and again!