I’m not using a mask that any part of comes from China. 3M or die. Not die, die, just the expression.
I’m wondering how effective a #4 Melitta coffee filter would be.
Mine are 3M and say Made in America with globally sourced products.
I was thinking about making my filler material, for the homemade masks, out of cotton (Made in USA) felt.
What do y’all think?
I’ve seen the mask material tests, but never did see anything about felt.