Why can't you use a walking foot on your brother? Depending on the model you purchased, it should be able to add the walking foot. Also in mentioning magnets around computer machines the claim is the magnets you would want to use such as in embroidery hoops etc.aren't strong enough to cause any problems with the machines. Talk to your dealer or check on line to see if there isn't a walking foot for your machine. good Luck
Suzy