Originally Posted by
azwendyg
I like to use a strong poly thread on mine, but a good strong cotton would also work fine. If you're making a super heavy-duty bag you might want to consider using upholstery thread.
You have a point about the upholstery thread. This is a large bag for my granddaughter to carry books for school. Dang it! I have every kind of thread except upholstery thread! Maybe I'll sew the seams twice...