bearisgray

as far as machine piecing and machine quilting -

I used cotton-covered polyester Dual Duty thread - I have several quilts that are in "active duty" and have been washed many times (the bindings are frayed!) - there is absolutely NO - NONE - cutting of the threads of the fabric that I can sec. All the seams are fine - no "cutting" of any threads there, either.

I don't know or understand how that belief started. I do not have experience with 100% polyester thread.

If one wanted to follow that "cotton only" usage - than only none-scrimmed cotton battings should be used, etc.

I would finish that piece with he thread I started with - especially if 95% done now!