Reinventing the Pencil Sharpener

This video is sponsored by Kontax Engineering: https://stirlingengine.co.uk/ In this video, Mike machines an overengineered pencil sharpener. For drawings, CAD and bonus videos, visit:   / chronovaengineering   The 3 engines we featured at the end of the video are: KS90R Ross-yoke Solar Acrylic Stirling Engine: https://stirlingengine.co.uk/products... PROP V Ringbom Engine: https://stirlingengine.co.uk/products... Prototype Dragonfly Thermoacoustic Engine: Coming Soon... (Similar to the Nano Flux Thermo-acoustic Twin Cylinder Engine: https://stirlingengine.co.uk/products...)