Yes, thread goes bad. I can't give you an exact timetable, but it goes
bad faster than fabric. If it breaks when you use it in the machine
(assuming the tension and threading are correct), let alone when you
pull on it by hand, it's too weak to use for permanent sewing. Use it
for hand basting. It would be even more of a waste to use it for a
garment and have all the seams fall apart quickly.
Fran
Lavolta Press
Books of historic clothing patterns
www.lavoltapress.com
www.facebook.com/LavoltaPress
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