what in the world is the scant quarter inch I have been making quilts for years and when I started it was 1/4 inch everything worked fine Mary Ellen Hopkins was big in the quilting scene in the 1970's and her classes were really fun and she used PPM measurements{personal private[ if consistant it works from there I went to the 1/4 inch still use it with no problems but I do not do any swaps as some people are to fussy quilting should be fun not stressful oh by the way after all of these years Mary Ellens book "It's OK if you sit on my quilt" is still one of my favorites