I have a Bernina 200 and a 440QE. They just happen to use different size bobbins :evil: Just make sure the bobbins you're using are the correct ones for that machine. Also, your bobbin probably winds faster than you sew, so it could bounce the machine a little. You can put that rubberized shelf liner underneath. My 200 is the one I use for embroidery and without the shelf liner stuff, it sounds and looks like it's going to bounce off the table... :wink: