I've watched some videos and done some reading on making a double welt (to cover upholstery staples). I think I can do this with the correct feet for my 111W155 machine but I can't seem to find any definitions on double welt dimensioning. For example, if I get 8/32 foam double welt does this mean the diameter of each cord is 8/32 or is it the overall width of the two cords side by side? For the double welt sewing feet, same thing, is the dimension listed the overall width of the double welt it will sew? Also, when buying a double welt foot set should I stick with Singer or any other particular brand? I don't plan on using it a whole lot but want it to work.
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