serger thread adapter for singer model 4411 sewing machine

thingiverse

This is a serger spool adapter for a heavy duty singer 4411. It holds the serger spool vertically, but mounts on the horizontal spool holder as shown in the photos. I tried the "cone" type and had difficulty threading a bobbin with them because the bobbin is very close to the upright spool holder on the 4411. With this adapter, you can both thread the bobbin and sew using the large serger spools.