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These prevent the chafing and makes it easier to wear the masks for extended periods of time. After these cut I put them on the belt sander at a 45* angle to soften the edge. This caused the chips to melt. But those chips pop right off after a few seconds of cooling down.
Comments
What did you cut these out of?
Heath A Grable · May 27, 2020
These were out of acrylic. They were a bit stiff. The next few batches were HDPE. Much better!
JOHN T LEHMAN · May 27, 2020