My Sewing Machine Needle Change Log: Hours, Projects, Fabrics, Symptoms, and Uncertain Causes
My needle changes on a SINGER 4423 have been shaped more by material, symptoms, and setup than by any single replacement interval. Some changes were routine, one followed a pin strike, one coincided with an improvement in a thread problem after I also rethreaded, and one fresh needle did not fix the skipped stitches I