Terminology - Face Shields (visières de protection) (7) 3DVerkstan (Sweden)

Copyright © Françoise Herrrmann

The Swedish 3D design firm 3DVerkstan also created a face shield design, addressing the shortages of PPE (Personal Protection Equipment), within the context of the COVID 19 emergency situation.  The 3DVekrstan design, designated Protective Visor, is downloadable, via Github, worldwide for free, in several different versions, depending on regional standardized sheet sizes, and hole-punch: Sweden (4-hole punch, A4 sheet), European (2 hole punch, A4 sheet) and North America (3-hole and 6-hole punch, letter size).  

The design consists of two parts, a 3D printed headband and a sheet of plastic with the appropriate combination, size and distance of punched holes, in view of securing the sheet to the headband.  The 3DVerkstan Protective Visor supports the use of a rubber band in the back to adjust the headband, according to head circumference. To accelerate printing, the headband design is also stackable.    

Below, specification of the 6-hole punch, North America, 3DVerkstan Protective Visor design, extracted from the GitHub Protective Visor by 3DVerkstan Template and Instructions sheet, and an image of the assembled and fabricated 3DVerkstan Protective Visor.

3D Verkstan 6-hole plastic visor sheet  and 3D-printed headband

3DVerkstan 6-hole North America Protective Visor

Incidentally, the 3DVerkstan Protective Visor design was selected by American architectural firms nationwide, after being initially contacted by the Dean of the School of Architecture at Cornell University (Cassidy, 2020). The emergency call sent out to architectural firms was initiated, because the demand for PPE in New York City (NYC) was just too high, beyond the Weill Cornell Medical facilities, already procured by the Cornell School of Architecture. At one point, the need for face shields in NYC was estimated at 20,000 to 30,000 per day. Thus, architectural firms such as KPF (Kohn Pedersen Fox) and BIG (Bjarke Ingels Group) jumped on board, converting rapid prototyping 3D machines to the production of face shields for use as PPE in NYC, while setting the trend for other firms to follow suit, elsewhere.

References

3DVerkstan (Sweden)  https://3dverkstan.se/protective-visor/

BIG (Bjarke Ingels Group): https://big.dk/#projects

Cassidy, R. (April 4, 2020) COVID-19: Architecture firms churn out protective face shields using their 3D printers    https://www.bdcnetwork.com/covid19faceshieldroundup040420

GitHub 3DVerkstan Protective Visor files: https://github.com/Cederb/Faceshield.nu/

Github 3DVerkstan Protective Visor Instructions and template – North America 6-hole  https://github.com/Cederb/Faceshield.nu/blob/master/North%20America%206-hole/US_Face_Shield_Instructions_%26_US_6_Hole_Template.pdf

KPF (Kohn Pedersen Fox) https://www.kpf.com/

Molitch-Hou, M. (April 6, 2020) 3DPrint Safety recommendation for 3D printed COVID medical devices Pt.1 - https://3dprint.com/265620/safety-recomendations-for-3d-printed-covid-19-medical-devices-part-one/