For the past 4 years I have used a side winder from JoAnn's $25 with coupon and love, love, love, it!!! I have a 1926 singer treadle, an Elna from the 30's, Sears Kenmore from 50's, Janome from 1996 and a 2010 Tin Lizzy (Tin lizzy's bobbins will only 1/2 fill before turning off). I have never had a problem with bobbins wound on the side winder.