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If we could lay hands on some paper made of randomly-arranged solid fibers (such as rayon, which is solid cellulose), I predict the oil-spot effect would be really spectacular.
From:
Why White Things are White
Very pop. washing up cloths in England were (Sixties) J cloths. I think they were random weave viscose.
Yes, non-woven viscose:
Multi Purpose Cleansing Cloth - 02016 - GOP (China Manufacturer) - Products
unfortunately green -- another supplier?
bc
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