Originally Posted by Ps 150

My Gram recently decided she was too old to quilt and sew anymore. (She's ONLY in her 70's and some of you spritely ladies could give her a "Haha!" for that thought!) So, she cleared out all of her supplies and passed them onto my daughters and I, her only quilting/sewing descendants. This greatly increased my supply of tools and notions but also THREAD! Trouble is, most of these spools are old. A lot of the thread is rayon, mercerized or even silk. How old is too old for these types of threads? They're all so pretty and I just don't want to pass them on. There were also 3 bags of tiny paper bobbin type spools and I'm not sure what they were used for. Help! Please!