Originally Posted by judykay
I have used bobbin thread only in one quilt and will never use it again, the seams did not hold up well. I am not trying to speak badly against a product but this was the experience I had.
I took a class on heirloom machine quilting, and I took a class on precision piecing. Both classes were taught by the master quilter, Harriet Hargrave, from Wheatridge, Colorado. She is totally convinced that cotton fabrics deserve the strength of cotton threads only -- no rayons or poly threads which will eventually cut the fabric of the quilt in the seams. Thinner embroidery threads do not hold up to the weight of a quilt and eventually the seams will come apart. She recommends Presencia 3-ply 60 weight for piecing a quilt. This thread is manufactured in Spain by a family owned company known for quality and it is relatively new to the United States, but has been in Europe for 80 years or more. For machine quilting, you can use almost any thread on the top, and almost any thread in the bobbin, including silk threads and nylon threads. A wonderful book dealing with all of this is Harriet Hargraves Heirloom Machine Quilting book.