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Simpler boat style - an attempt at a no nose-wire 3D mask

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Lab tests for Spunbond Polypropylene masks

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Cup style

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Don't use regular fabrics for high filtration washable masks - impossible breathability

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Another boat style - adapted from the patterns of others

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3D style that looks pleated - 3 layers of 80gsm

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Pleated style - six layers of 80gsm SBPP

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Boat style mask using SBPP - lots of snipping!

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Garden center as a source for spunbond fabrics

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Maker mask data as a Googlesheet and graphs - calc the filtration effectiveness % for your SBPP mask

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Aaron's video test of my three masks - shortest clip

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