Originally Posted by
tropit
I'm almost done FMQing my first, full-sized quilt on a vintage Singer 403A. It's been a total headache for me. Some of the stitching looks OK, some looks terrible. I can't tell you how many feet of stitching I've had to tear out. I've watched Leah's videos and at this point, I think I've had a good amount of practicing, but I still have, "bad stitching sessions." I'm with Sue, if you have any more tips, please share.
Your Singer 403a is a class 66 machine, which means it has the drop in bobbin.
As I stated, the better machine to FMQ with are the class 15s.
Singer 15-89, 15-90, 15-91
Necchi Supernova or Necchi Bu
So, If you can find another machine that is a class 15 for a steal-get it!