JUST A NOTE ON THE DIFFICULTY OF IDENTIFYING THIS FABRIC:
I thought I had it figured, from the pointers JustJeff gave, but the fabric I identified as nysil is, in fact, DWR, per Brian (aka TBACK).
I thought I couldn't blow through it and it held water for a short test.
Oh well, the USPS needs the income.
When I tried to blow through it a second time, I *guess* I could. It is really hard to get any "FLOW".
Apparently nysil is clearly coated on one side only. Is this true? And obvious to see? It must be like saran wrap for a "blow through test".
Hope this helps someone else.
Tom
Fabric newbie
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