Each one of us is working in our local communities to contribute in different ways. Here is news from the town I live in Acton, Massachusetts where we are working with the local doctors to create a fast and quick version of the Face shield. A team member Jon Eggert created the design in Dassault Systems software. Here is an email I just received from coordinator:
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Dear 3D printing team,
Hello and thank you for joining our effort to provide desperately needed PPE for our local medical community. We are in a great position to make a difference in our struggle against this virus and our work will no doubt keep people from being exposed at work.
We have decided to redirect our efforts to a new design. This design was created by Jon Eggert (on our team) in consultation with Amy Churchill M.D. and her colleagues at Acton Medical. This design is faster to print, faster to assemble and has the same type of forehead protection as the Budmen. Since we want to pump out as many as we can, switching now will allow us to meet an ever-increasing demand. We have over 200 frames/visors printed and have delivered more than 120 to our medical and public safety community.
(We still really want your Budmens, but think that switching now will speed up the process.)
The plastic shields that attach to the visors are being lasered cut and can fit both the Budmen Design and the Eggert Design. We are still building and supporting Budmen designs, so if you have some on your printer, please contribute..
Technical notes from Jon Eggert to get your printers going on this new design.
“Attached are the files for printing either one or up to 3 at a time. We have the other materials needed to finish assembling the face shields, so please focus on the printing and we’ll take care of the rest.
PLA filament is recommended and the following settings will help shorten the print time:
- Make sure your bed is level and cleaned with 90% isopropyl alcohol to help ensure good adhesion
- First layer height: 0.2mm
- First layer width 250% - helps ensure there are no gaps in the drip shield
- Layer height: 0.3 or 0.35 if your printer can handle it
- Perimeters: 2 (or 0.8mm)
- Top and bottom solid layers: 2 (or 0.8mm)
- Support: None
- Infill: 10% grid
- Adhesion: None. Disable raft or print times will suffer. These parts bend, so they’re easily removed from the bed.
- Nozzle temperature: Increase by 10%. I print PLA at 225C when printing 0.35mm layers
- Part cooling fan: Always on after the third layer. Run between 50 and 80% fan speed”
Here is the list of people that I believe are printing with us. With some of us having multiple printers, we now have close to 20 printers getting after this! Thank you.
1. Jon Twichell
2. Jon Eggert
3. Jack Kline
4. Victor Margarint
5. Ben Orr
6. Suchit Jain
7. Nandu Vellal
8. David and Marie Planchard
9. Josh Gold
And New to the team (from our website!)
10. Olivia Yang
11. Erin Tavano
12. The Simon Family
13. Nick Venti
14. Jack Davis.
15. Stephen Smith (Somerville, represent!)
16. Adam Gary
Drop-offs will still be at 20 Agawam Rd in Acton. Please leave clean visors in a bag on the front porch.
With my deepest gratitude,
Jon Churchill, the only one without a printer, but with plenty of visor shield, elastic, and crazy glue!
