Originally Posted by Vintage.Singers.NYC

I would say a Singer 15-91, but I'd be referring to one I'd refurbished to make sure everything was up to snuff. While a well-tuned all-metal, vintage machine would surely be equal to the task, the problem in recommending a specific model is that it all depends on the condition it's in. I've received several 15-91s that, straight after the purchase, were in terrible shape and barely sewed. Another powered through everything like a tank with almost no adjustments.

Everything from the condition of the machine, the condition of its motor and even how its foot pedal is tuned will affect how the machine performs. My advice would be to buy a machine in person, not online, and test it out before buying to be sure it can do what you want it to do.