On the quilt I am repairing, I am making "prototype squares," and what I mean is that I am working out the best/fastest way to replace the squares I am replacing.
I have a presser foot that is for sewing parallel lines. In theory, this sounds real good for making the "concentric squares" that I talked about.
This foot is held together by 3 screws, 1 that holds it to the holds it to the needle bar with the other 2 for the adjustment of the width between the row of stitches that is already made and the one that is currently being sewn (this is the closest I can find to what I have:
The problem is that the screw that adjusts the width comes loose very easily, and when that happens the needle hits the solid part of the presser foot and breaks, I think I broke 2 needles before I figured out what was going on, and decided to do it the "old fashioned" way, with a ruler to figure out where the parallel lines go.