Thingiverse
Filter Mask
di mikeaj
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This is a more simple, and faster build than my last. Also, much more comfortable for people who don't like straps around the ears. Print two MaskInserts & MaskSnapFlannels. Other parts are optional. "Flannel" parts just allow for more material thickness, and are appropriate for tee shirt material.
You'll need filter material (I like tee shirt best) and less than 30 inches of 1/4 inch elastic strap. I cut a rectangle of filter material about 25 cm x 15 cm. Fold the edges in a fan pattern (see picture), and bend around the sharp edge of the insert. Hold it all in place while sliding the snap over it all. If you use thicker filter material, or double up with tee shirt material, you might have to increase the scale of the snap.
Stretch the elastic to pull over your head. The upper band angles high over the ears, around the back of the head. The lower band below the ears, around the back of the head. Adjust the elastic thru the buckles and snip off dangling excess. Thi
You'll need filter material (I like tee shirt best) and less than 30 inches of 1/4 inch elastic strap. I cut a rectangle of filter material about 25 cm x 15 cm. Fold the edges in a fan pattern (see picture), and bend around the sharp edge of the insert. Hold it all in place while sliding the snap over it all. If you use thicker filter material, or double up with tee shirt material, you might have to increase the scale of the snap.
Stretch the elastic to pull over your head. The upper band angles high over the ears, around the back of the head. The lower band below the ears, around the back of the head. Adjust the elastic thru the buckles and snip off dangling excess. Thi
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