I have seen instructions for doing bobbinwork by either loosening the screw on the bobbin case that came with the sewing machine or getting an extra one and using it just for bobbinwork. My question here is, can bobbinwork be done on a machine that has a drop-in bobbin which has no separate case? One of my machines is like that and it has 400+ stitches, many of which would be great stitched out in heavier threads or even yarns.
I hope someone out there knows if this can be done, and how to do it. Thanks.