Sorry, I've tried all the 1/4 inch feet on different machines and I still rely on the moleskin measured out to a scant 1/4 inch from the needle. I've had trouble with fabric slipping under the edged foot and I found I had to sew slower to contain the scant 1/4 inch. I have Baby Locks, Featherweights, Juki, Janome, Singer 301's and a treadle and will stick with the moleskin. I find I can get a perfect 12 1/2 inch block this way...or any size for that matter. Good luck finding the best foot. A lot of my friends use them and are very happy with them.