Originally Posted by
auntnana
Wow this is interesting. I've always been told and read that if you're using cotton fabric you should always use cotton thread and bobbin. Reason being if you use poly thread it will outlast the cotton and would wear the fabric at the seams.
Check out the information here from Superior Threads -
http://www.superiorthreads.com/educa...ar-the-fabric/
If you will look, your cotton underwear is sewn with poly threads...how often does the thread cut the fabric? Heck, I think most of our store-bought clothing, regardless of material types, are sewn with poly threads since poly can take the higher speeds of the sewing machines used to make the clothing.