COVID-19 Response/COVID-19 Face Shield

Hacksburg is standing by to produce face shields if requested by local officials or medical facilities.

Current Actions

• Coordinating with 3D Printed PPE Roanoke VA
  • Supplying 1500 DtM face shields to Carilion Hospital for delivery to Carilion medical facilities
  • Supplying previously produced Prusa/Budmen/Verkstan designs to first responders (designs not approved by Carilion)
  • If you have a 3D Printer and are interested in assisting, join this group!
• Coordinating with Virginia Tech group
  • Trying to get a UW style shield approved by Lewis Gale
  • Hacksburg standing by to provide access to manufacturing equipment while VT is closed

Current Design

• US Version Prusa RC3 Headband: https://3dprint.nih.gov/discover/3dpx-013409
  • Faster printing than design with brim
  • Pegs spaced to use clear shield with 3-hole punch
• Laser cut Verkstan-style headband
  • Remixed from https://3dprint.nih.gov/discover/3dpx-013306
  • 2.5 minutes per headband
  • Grips head, does not require elastic
• Custom designed laser cut clear shield
  • 5-hole design compatible with Euro and US hole-punch spacing
  • Optional integrated brim to provide overhead protection

Alternate Designs

• Open source face shield from University of Wisconsin: https://making.engr.wisc.edu/shield/
  • Drawing: https://www.delve.com/assets/documents/Open-Source-Face-Shield-Drawing.pdf
• Cheap and fast to produce - no 3D printing required
• Other options we thought about:
  • https://3dprint.nih.gov/discover/3dpx-013238?fbclid=IwAR13_cB6DR475PvbUBBAAXCPud9X3EwqKkwqGkocr1iaeoQlIrhFKsjkupE
    • Undergone review in a clinical setting and is recommended when fabricated as instructed by the National Institutes of Health
  • http://makernexuswiki.com/index.php?title=3D_printed_face_shields
    • Shields the top of the head with transparent shield material, faster to print than NIH design
  • https://www.protohaven.org/proto-shield/
    • Laser cut design; only requires PETG and elastic band
  • https://pwp.gatech.edu/rapid-response/face-shields/
    • Laser cut design; only requires PETG and elastic band

Materials

• Clear shield
  • CLEAR POLYESTER FILM - 0.007" THICK, MCMASTER-CARR PART NUMBER 8567K64 (https://www.mcmaster.com/8567k64)
  • PETG from soda bottles - potentially supplied by Coca-Cola
  • PETG Window film - donated by Eastman Precision Films
  • Projector transparencies
  • https://www.piedmontplastics.com/products/petg
  • https://www.usplastic.com/catalog/item.aspx?itemid=23337
• Elastic band
  • ELASTIC LATEX FABRIC (1" WIDE X 13" LONG), MCMASTER-CARR PART NUMBER 88225K68 (https://www.mcmaster.com/88225k68)
  • Alternative: https://www.bestmaterials.com/detail.aspx?ID=20220&gclid=EAIaIQobChMI5f6FvajA6AIVg5yzCh3VuwaAEAQYBSABEgLtqfD_BwE
    • Makes 26 foam pads per spool.
• Brow Foam
  • ADHESIVE BACKED POLYURETHANE FOAM (1" TO 1 3/8” THICK), MCMASTER-CARR PART NUMBER 8614K84 (https://www.mcmaster.com/8614k84)
  • Alternative: https://smile.amazon.com/Exercise-Strength-Resistance-Stretching-Workouts/dp/B07THMV2B1
    • Makes ~400 bands per 24 yard purchase.