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How to Make the Cardboard BU Mask, Modify an Elipse Mask for Easy On/Off, and Sew a Fabric Mask with Insertable Filter

By Rain Noe - May 6, 2020

The video below features three mask tutorials. In the first, industrial designer Eric Strebel's wife shows you how to sew a pleated mask that contains a slot you can slide a filter into; then Strebel shows you how he modified his shop mask for easy on/off; finally, he runs you through making a BU Mask, which is a cardboard mask (designed by Evgeny Maslov, freely downloadble plans at the link) that can also take a replaceable filter.

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How to Make the Cardboard BU Mask, Modify an Elipse Mask for Easy On/Off, and Sew a Fabric Mask with Insertable Filter

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Rain Noe

I’m a lapsed industrial designer. I was born in NYC and figured I’d die there, but a few years ago I abandoned New York to live on a farm in the countryside with my wife. We have six dogs.