Originally Posted by
charlottequilts
I have a couple of thoughts on this one (for what they're worth). First, i don't get why the opinions of the folks at Superior Threads are so often cited as authoritative (or superior). Second, Harriet's daughter is doing a master's thesis on the physical qualities of thread, which should be at least as scholarly, or perhaps even more credible, since her main business isn't selling thread. It will be interesting to see the outcome of her work, i think.
I totally agree with you, Charlotte. Independent research definitely has more credibility.
It will be generations from now, however, before there is actual proof, one way or the other, whether poly sewing thread cuts through cotton fabric threads. It simply hasn't been in use long enough at this time, making all opinions merely speculation at this point.
I don't use poly thread for the same reason I don't use poly batting...I have no desire to use petroleum products in my quilts.