After thinking about it for a while, I realized that the machine that would do zig-zag was probably not a 301. That was the beginning of zig-zag machines, I think. I got a zig-zag attachment for the 301A that moved the fabric back and forth. LOL I used it once to put decorative stitching on the bassinet skirt. Didn't work very well. It need stiffer fabric or stabilizer.