Ashford Jumbo Bobbin Resized Core Piece

Since I thought the original bobbin core was too small in its outer diameter, the center hole too small and the threaded parts too short to get a snug even fit to the bobbin discs, I designed this core piece, which works perfectly.

I also made another version with a leader yarn hole.

Extruder temp: 215 degrees C
Bed temp: 60 degrees C
Shell thickness: 3
Bed adhesion type: Brim
Supports: Lines touching build plate only

The core needs to be rotated 90 degrees to an upright position be