I keep extra bobbin cases as my sewing room is in the basement with concrete floors, plus I'm super clumbsy. I think so one out there sells a gadget to repair your bobbin case back to round, thinks it's Jamie ???? Hope you can have your bobbin case repaired or buy another one as a backup. I think I have 4 or 5 laying around. Now they've gotten so expensive so I'm glad I ordered them when I did.