Automated Knife Sharpener

Automated knife sharpener using 3D printed components.

Automated knife sharpening. Set it, walk away, come back to a sharp edge.

///Case Study

Challenge

Knife sharpening with a Horl-style sharpener is repetitive and time-consuming. Wanted to automate the back-and-forth motion entirely.

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Approach

Crank slider mechanism powered by a 12V 100RPM motor. 3D printed hexagon gear with D-shaped cutout drives a set of arms. Speed control for consistent strokes.

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Outcome

Work in progress. Currently solving linear tracking—the sharpener needs to stay perfectly straight while the motor cranks it. Designing a rail system to constrain the motion.

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200mm x 80mm

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