Thread spool pin adapter to mount a large thread spool on a sewing machine. The adapter allows to hold a smaller spool or bobbin on top of the larger spool in parallel, which allows sewing with multiple threads or a twin needle. 

The adapter is attached on the bobbin winder on top of the sewing machine. Tested on various Brother sewing machine models with 5000m thread spools.

Printing

• Supports required
• 25% infill
• 0.3mm layer height