Regular household-type magnets aren't nearly srong enough to hurt your Bernina. Between you and the innerworkings of your Bernina, in addition to the composite outer housing ou see, are two steel plates, shielding everything form dinky little magnets. I wouldn't risk it with any other brand, but I keep my magneticpin cushion right in the throat of my 200 (and my 150 before that) with no worries. Just to be on the safe side, do keep it away from the screen, though.