3D Printable Bobbin This bobbin is printed in two parts and can be glued together. The resulting bobbin is 5" long. This part was designed and tested by Lily Gabriel. Step 1: Load/Adjust/Print the .STL File on a 3D printer Step 2: Glue the Parts Together with whatever glue works best with your printing material Step 3: Wind and Weave Shown here in a 9" Schacht Boat Shuttle