I don't have either of your machines, but on my Janome, if I unplug my foot pedal, there is a button right above my needle that I can push to start and stop my machine...do either of your machines have that? If you have to use the pedal, could you use your shoulder? Yes, it would involve having someone make a stand that you could put one wheel of a wheel chair on to hold it steady, but you could strap your foot pedal to a board that sticks out like a flag so you could use your shoulder to depress the pedal. Having it so a wheel chair would sit on it would sit on the base would give it stability so you could push against the pedal without having the structure run away from you. If you live anywhere close, I'd build it for you!