To remove the bobbin case from the bobbin compartment of the sewing machine, the sewers must carefully insert a paper clip that has been bent into a straight shape at the top of the bobbin case and gently pull up on the paper clip. Once the bobbin case has been removed, the bobbin can be removed from the bobbin compartment of the sewing machine. The bobbin is typically housed in a small compartment underneath the bed of the sewing machine. In order to access the bobbin, it is necessary to first locate the bobbin case by searching for a small door on top of the sewing machine. Once the door has been located, the bobbin case can be removed. It is then possible to remove the bobbin from.
Nono, I'm talking about the classic class 15 side/front loader with bobbin case. Plastic has been the default for several manufacturers since the 90s at least. Injection mold plastic is easier to produce to acceptable specs than metal when price is a factor.. This looks similar to my Juki LU 562, which has a smaller bobbin than the Juki LU 563. On mine, there's a silver metal part that is shaped like the letter "C", sort of. It goes on top of the bobbin case. There are 2 really tiny screws that hold this letter "C" down.