I'm giving this machine a test run. I've never tried to FMQ with one before. I did all the piecing on the machine, it sure does feed nice.
After getting the block together, I put on the aftermarket foot (from April 1930) and gave it a whirl. Please forgive my poor skills, I've done very little FMQ. I have rayon thread on top, and should mess with the tension a bit more. I wanted to see how the machine would handle something different.
It's pretty neat, you can have the pedal full speed and keep up with it quite well. Wish I'd had one of these when I was doing the lap quilt for my Mom, it's working out way better than my main machine did. But to be fair, I didn't have a foot like this either.
I'm glad I've got another 15-91 and a 15-90 to keep, or I may not want to give this one up!