There was an article I was readin just this morning on the board about this same thing. Said it is a myth which I tend to believe. I have sewn for years and never had any problem with poly thread. I just use what I have. As long as my machine will take it, I use it.
Originally Posted by dglvr
Originally Posted by nanna-up-north
The larger the number, the finer the thread. 100 would be very fine. Size 50 is standand sewing thread. If it is super strong it must be polyester..... try burning a wad of it in an ashtray. If it burns, it's cotton. If it melts, it's poly or some other man-made fiber.
I like to sew my quilts with 100% cotton thread because I've heard that pure polyester is so strong that over time it will cut the cotton fibers in your quilt. When I've used cotton/poly thread I picked something that wasn't 100% poly and haven't had a problem as yet.
I'll be interested in hearing how this thread works for you.
:thumbup: :thumbup: Thanks for that info.