When visiting a home sewing machine shop, I watched the following tip. I thought how clever it would be for people having issues with the wrong needle thread sizing. I know that many of us have charts but this is a quick and dirty method. This lady carted in with a machine, a cigar box FULL of needles, about 10-12 spools of thread, some light fabric, some heavy denim and some suede (4-5 oz). Turned out that this machine was given to her by her Mom and that she had seen her sew all these mater