COVID-19 PPE Specifications > U-M Face Mask Adjusters

U-M Face Mask Adjusters

Last Update: 8:15 pm (EST) on May 8, 2020

Specifications

The current preferred design and materials for the DIY community are as follows:

Design Files:

 

  • See “Design Details” section below for further information on each model.

Face Mask Adjuster
Materials Preference:

  1. PETG

  2. PLA
* If using these materials ensure that you are following the appropriate ventilation specifications, outlined below in the “Safety Precautions”

Design Details

Print Settings: 0.35mm layer height, 20-30% Infill (though these may be slightly different for your own machine)

Assembly Instructions

PLEASE DO NOT PARTICIPATE IN THE PRODUCTION OF FACE MASK ADJUSTERS IF YOU ARE DISPLAYING ANY SYMPTOMS OF COVID-19

Specific Production Notes/Requirements

Safety Precautions:

U-M EHS Makerspace Guideline recommends the following ventilation considerations for 3D printers.

  • 3D printers using PLA or PETG filament can be operated in a lab space without special ventilation considerations as long as the general ventilation equates to at least 4 ACH (air changes per hour), and only one printer is in use. If more than one printer is in use, EHS should be contacted to evaluate the need for increased ventilation.
  • 3D printers utilizing ABS filament shall be ventilated using any of the following:
    • A compatible attached ventilation system (filtered or direct exhausted)
    • An EHS-approved fume extraction local exhaust ventilation system (LEV) (filtered or direct exhausted – LEV)
    • A fume hood
    • Single-pass general ventilation and no less than 6 ACH

For U-M faculty/staff/students with 3D printers in campus shops or laboratories, this activity may be considered as “Directly related to COVID-19 and have a timeline for deployment that could address the current pandemic” in accordance with UMOR COVID-19 Research Operations Protocols.  Shop or laboratory directors should request access to facilities with resources to support this activity using procedures applicable to your School or College, or by contacting the office of your Research Associate Dean.

For U-M faculty/staff/students with 3D printers at home, it is highly suggested that they are used in well ventilated areas.  For specific recommendations please consult Section 8: Exposure Controls/Personal Protection of the Safety Data Sheets (SDS) for the filament materials being used. Users should consider returning any U-M equipment taken home to a campus shop or laboratory in accordance with the campus shops or laboratories section above.

U-M Resources

Questions please contact: covid-ppe@umich.edu

Drop Off Details

PLEASE DO NOT DISSEMINATE DIRECTLY TO HOSPITAL OR HEALTH CARE WORKERS TO AVOID INADVERTENT CONTAMINATION.

Place adjusters into a sealed bag and deliver at the Michigan Medicine drop-off donation site, located at 2800 Plymouth Road, Ann Arbor, MI 48109

Version History
Version 1.0 – 04-23-2020