Preparing to Sew Masks for CoverAid PHL
CoverAid PHL is an open community dedicated to coordinating supply chains and innovations to support personal protective equipment needs of professional health care in the Philadelphia region during the Coronavirus pandemic. Masks and Respirators are their (our) first priority
On the left is shown the mask. When I questioned this mask, Dr. Evan Malone, President of NexFab and one of the founding organizers of CoverAid PHL replied: …samples of the mask shown at left have been accepted by 3 healthcare organizations and they are wanting thousands of these.
Wash and dry the masks on hot heat, press if needed
Have 3 yards 100% cotton for making the shell, still need the 3 yards of cotton jersey to arrive. Have the elastic, but it is 1/2 inch wide. Need to cut it to 1/4 inch wide. Buy 1/4 inch elastic, even if you wind up paying more. Cutting elastic in half is miserable and takes too long. When this post was published I was waiting for pipe cleaners to arrive for making the nose grips, inserted into the casement at the top of the masks.
Lay the fabric out for cutting
Mark the shell’s width up the length of the fabric; repeat the procedure, marking the lengths across the width of the fabric to mark the cutting lines for all of the shell pieces
This is a tight cut, with almost no waste.
A one and one-half yard length of sixty-inch wide fabric yields 7 widths.
Sixty-inch wide fabric yields 7 lengths.
Seven times seven yields 49 shell or lining pieces.
Two plies of fabric, each one and one-half yards long by 60 inches wide, yields 98 shell or lining pieces.
The only waste is a 1/1/4 inch wide strip the length of the fabric. The strip can be sewn into approximately 4 ties, and then sewn to two masks instead of elastic.
When the knit lining arrives will cut the cross-grain fold at the top of the top ply of marked shell fabric, then remove the top ply. After washing and drying the knit lining on hot heat, will fold the knit lining in half, then lay it over the bottom ply of the shell fabric. Finally will lay the marked shell fabric on top and cut all four plies at once.
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© Laurel Hoffmann, 2020.
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- 131: Tips for Mass-Producing CoverAidPHL Fabric mask v1 April 15, 2020
- 130: CoverAidPHL Fabric mask v1 Production March 30, 2020
- 129: Dealing with the C-Virus March 23, 2020
- 128: High-end Cutting Tips February 10, 2020