Ready to install: extended servo horn attached
The only expendable component of the AxiDraw is the small, blue pen-lift servo motor. They do wear out over time but are straightforward to replace. For heavy duty applications, you may wish to keep a spare on hand.
This replacement servo motor has been calibrated to the correct range, has the extended servo horn attached, and is ready to install. Includes a few cable ties to keep things neat.
The AxiDraw MiniKit uses the long lead servo motor instead.