Hello, Sandy the inventor of the Curve Master here. We have never met a machine it won't adapt to fit! I don't know what "3 machines" someone said the Curve Master won't fit, but I never have said that. Bernina machines need an additional metal Bernina shank that accepts generic feet, and that is the only additional item anyone would need, as the foot clips onto most machines and comes packaged with 6 shank adapters for low, high, slant needle, super high, and other shank requirements! Please go to
http://www.justcurves.biz for other answers and tutorial, or email me. Thanks!