MakerMask: A New Adventure

I never thought my own struggles with occupational asthma or MacGyvering back-country masks for wildfire smoke on the PCT (2014) and CDT (2018) would come in handy in a global health crisis, but here we are…

I am putting to good use a decade of research and background into respiratory health, the science of particle sizes, models of particle dispersal patterns, depth of penetration into the lungs, and a very personal relationship with N95s to work with a team of volunteers on the MakerMask project.

Early in March (right after my last post), I started making and fit-testing prototypes for science-driven mask designs. On March 17th, I mailed four prototypes to @ATOR Labs in Florida for preliminary lab validation. Today, MakerMask has two patterns on our website – makermask.org — and a third design in the pipeline.

MakerMask Prototype Development

“MakerMask: Fit” and “MakerMask: Surge” prototype development using NWPP from a New England Patriots bag. After discovering most elastics for home sewers include latex and don’t withstand sterilization, more recent models use latex-free cloth ties.

Four key lessons:

  1. Nonwoven polypropylene (NWPP) provides better droplet protection than cotton, which is especially relevant in a droplet-transmitted pandemic. NWPP is the material of choice for commercial medical-grade masks. Water-resistant NWPP outer layers block the droplets that can carry viruses from coughs and sneezes, while allowing for vital airflow. Reusable grocery bags are an accessible source of NWPP.
  2. Certified N95 masks with valid fit tests are a critical resource for our front line communities, and the supply chain for those materials is stretched thin. Single layer NWPP covers can extend the lifetime of our limited stocks of commercial-grade masks.
  3. Latex-free designs are important, especially in clinical settings. Cloth ties or bias tape have advantages over elastic straps b/c they don’t contain latex allergens and can be sterilized without heat damage. Look for designs that can be home-sterilized by boiling before community use or be sterilized in autoclaves for larger scale use.
  4. This impacts all of our communities; we all can help; and I need your help. In addition to sewists, MakerMask is seeking volunteer team members to help with mask testing, communications, project management, and IT. I also need help from fellow researchers, clinicians, and friends who can use these masks and help get the word out about the importance of science-driven, clinically relevant designs. Check out https://makermask.org/contribute/ if you can offer help!

Thank you and stay safe!

"MakerMask: Surge"

The MakerMask:Surge, shown here in the snow last week was designed to provide droplet protection, to be latex-free, home sterilizable, and relatizely easy to construct.

Links with MakerMask in the News:

 

Face Masks & Respirators: Insights from An Asthmatic Adventurer

Face Masks & Respirators: Insights from An Asthmatic Adventurer

Wearing my N-95 on the CDT

Wearing my Vogmask N-95 respirator during my 2018 CDT thru-hike.

As COVID-19 sweeps across the globe (click here for the latest numbers from the WHO), there is a sudden spike in interest in the use of face masks and respirators for personal use and as personal protective equipment (PPE). Masks/respirators are specifically designed for different tasks, and like most safety gear, they are only effective if you know what to use, when to use them, and how to use them. In this post I share info about:

  1. Masks/respirators: COVID-19 (click here for WHO guidance (pdf): Rational use of personal protective equipment for COVID-19)
  2. Masks/respirators: Personal Use and Backpacking (including a review of the Vogmask N99 that I carried on my CDT thru-hike)

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CDT Backpack Review

Snow Angel on the CDT

Making a snow angel on the CDT in Montana with my final CDT pack: the Lumina 60.

On my CDT thru-hike I used three different backpacks: my 2013 Exos 58, which finally wore out after 3,662 miles of harsh use, and two different 2018 Lumina/Levity 60 packs. Below, I review the two models (3 packs) I used on the CDT (see “The Gear That Got Me Thru (CDT Gear List)” for my complete gear list).

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The Gear That Got Me Thru (CDT Gear List)

The Gear That Got Me Thru (CDT Gear List)

Cowboy camping on the CDT in Wyoming. After >6000 miles, my sleeping bag is as cozy as ever.

“I don’t understand why my pack is so heavy,” I mumbled, heaving my pack onto my back, “I have all the ultralight gear.”  Peru laughed, “That’s exactly the problem. You have ALL of it!!” I laughed too. She wasn’t exactly wrong.

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Doggone Cold! Winter Gear List for Dogs

Winter on Mary's Rock

Here’s a list of the winter hiking and backpacking gear that M’s Seeing Eye Dog Edge used on our winter Appalachian Trail adventure in Virginia for New Year’s. This list includes the gear he used for climbing up to Mary’s Rock with wind-chills of -15℉, as well as the gear he used for his first winter overnight (with a record-breaking low of -2℉).

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