Another boat style - adapted from the patterns of others

July 18, 2021

Another boat style - adapted from the patterns of others

320 gsm of spunbond polypropylene - for about 80% protection.

OR 480 gsm of spunbond polypropylene - for about 80% protection

This was an oval of four or six layers of 80 GSM SBPP. That sewn in the oval shape

from the rectangle with the nose wire sewn in. The snipped outside the sew line. Then two major left to right sews, then the turned up (top) and turned down (bottom). Then wedges cut out of the throat area to tighten it. Lastly two sleeves for the round the head elastic.

It fits well. A six layer version isa little harder to make and gets you to 92% PFE (MakerMask test data)

For the cotton ancestors of this mask there was a turn inside out stage after an initial sewing

together of two rectangles/hexagons. That stage can be skipped entirely - SBPP is a very

different fabric type.

Making one

Template

You have choices. Smaller faces - 20.5 cm wide. Larger faces 21.5 cm wide.

The smaller white template: I can fold 1m wide cuts of fabric into six layers with that - only just as there is almost no fabric to cut off in that dimension. The brown one can't have that 1m folded into six. Only into five, and there's a good amount to cut off with that. You can make more masks with the smaller template.

Cutting the fabric off the roll

With my 1m x 10m roll of 80 GSM SBPP: The white line in the cut mark. I'm using the roll itself as the "straight" to guide the white pen. There there were three people for one sewing machine each mask would be 8 mins each.