DLS™ Face Shield

Assembly and Care Instructions

Page last updated: Monday, 230-Mar-2020 05:18:49 UMT

Disclaimer

To quickly scale up production of face shields, Carbon is making design & production instructions open and available to the public so that other additive manufacturers around the world may help to produce face shields for their local areas. Please note Carbon cannot make warranties with respect to these face shields. The design and instructions are provided on an as is basis. Face shield equipment is subject to the regulations and laws that might apply in your particular geography. Please check with local regulatory authorities.

Equipment Needed for DLS™ Production

To produce face shields with DLS™ technology, you will need the following equipment:

  • Carbon M2 or L1 printer (These files will not fit on M1 or M2d printers)
  • IPA or a Smart Part Washer™ with VF 1 solvent (in process of validating DPM)
  • UV curing unit (needs be at least 190 mm by 108 mm size to fit the bracket) some examples:
      • APM LED UV-Cube II
      • Dymax ECE 5000
      • Opticure LED Cube
      • Dreve PCU 90

At the moment, we have validated this design for our DPR 10 and UMA 90 materials. Our recommendation is to use DPR 10.

To order these Carbon materials, email salesoperations@carbon3d.com

Carbon customers can access the .Carbon files and detailed post processing instructions by visiting the DLS™ Face Shield page on Carbon Academy.

Face Shield Assembly Instructions

The face shield has three different components:

  1. Bracket (3D-Printed)
  2. Shield (Clear PET)
  3. Strap (Rubber band or elastic band)

 

Bracket:

  • Use the STL file to print the bracket using DPR 10 or UMA 90 material
  • The design has three circular protrusions on the front to hang the shield in place and hooks on sides to fasten the strap

Shield:

  • We recommend PET sheets with thicknesses between .005” and .010”.
  • We purchased PET sheets (size 10 ft x 40”) and used a laser cutter to create the rounded edges. You can order PET sheets from suppliers such as McMaster-Carr.
    • If you know of additional sources with available inventory, please share with us at covid19@carbon3d.com so we can post it here.
  • As an alternative to laser cutting, you can print this outline design on 8.5” x 11” paper and use that as a pattern to cut the PET sheet to size using scissors. 
  • We are using hole punches to punch 3 holes at the very top of the face shield to enable attachment with the 3D printed head bracket. 
  • Once cut to size, align the holes on the face shield to the 3D printed bracket.

Strap:

  • We are currently using elastic bands for their durability and comfort. These can be found here: https://www.mcmaster.com/3029t52
  • Alternatively, rubber bands (#18 size) can be used with a knot in the center.
  • Loop the band ends onto the hooks provided at the ends of the bracket.

End-User Instructions

User can put on the face shield with the inner bracket resting against their forehead and strap the rubber / elastic band loops around the head to ensure that the face shield is fixed onto the forehead.

Cleaning and Disinfecting of Face Shields

  • Face shields delivered to facilities should be considered non-sterile.
  • Both the transparent film and the head bracket of the face shield should be disinfected before and after use.
  • We advise disinfecting with a chemical disinfectant known to be effective against COVID-19 like Isopropanol (70%).
  • If wiping techniques are not possible, the head band can also be soaked in bleach and soap-water and subsequently wiped prior to use.
  • Do not soak the headband in isopropanol or organic solvents.

Pricing

Carbon is not providing specific guidance with regard to pricing for the face shields. We encourage all production partners to work directly with local hospitals in the area to work towards providing such products at a fair and reasonable price.