Parts to print:

• Front hub: features an M10 bolt passthrough.
• Back hub: features an M10 nut socket.
• Hex adapter: converts M10 to M5 for easy power drill attachment.

Hardware required:

• 1x M10 bolt
• 1x M10 nut

Assembly & use:

1. Prep the spool: Insert the front hub into the center of your empty destination spool.
2. Insert bolt: Pass the M10 bolt through the front hub until it exits the other side.
3. Secure the back: Slide the back hub onto the bolt and into the spool's center hole.
4. Tighten: Thread the M10 nut onto the bolt so it sits flush within the back hub's socket.
5. Connect drill: Attach the hex adapter to your power drill.
6. Respool: Fit the adapter onto the bolt head. Note: Spin the drill clockwise to ensure the mechanism remains self-locking during use.