• Electric Pencil Sharpener

    1. Grades 9-12

    $39.954.9

    Sharpen some pencils — and your engineering skills — with a pencil sharpener you build yourself! Construct the core, add the battery, and wire your mechanism up. Then learn about the invention of pencils, the evolution of sharpener design, and hidden engineering features that help your sharpener work smarter!

    Why it’s awesome

    1. Auto-on switch

      Build a circuit that turns on with the press of a pencil.

    2. Desk display

      Case and tube are designed to show off the mechanism.

    3. Sketch to invent

      Designer’s notebook, pencils, and invention inspirations.

    What’s included?

    • motor

    • 4 AA batteries

    • AA battery pack

    • sticky foam sheet

    • plastic tube

    • wood set (19 pcs)

    • tube lid

    • motor mount

    • 6 zip ties

    • 2 screws

    • limit switch

    • 4 pencils

    • notebook

    • 2 sharpeners

    • maker's guide

    Topics explored

    1. Electronics

    2. Engineering + design

    3. Creativity + invention

    Additional details

    From the desk of the product designer:

    Behind the design

    “What do innovators, inventors, artists, and engineers have in common? All their ideas start with pencil and paper. With this pencil sharpener and holder combo, you'll always have a pencil handy too for your next great idea.”

    - KiwiCo Product Designer

    By the numbers

    1

    Motor's gear ratio

    7

    Trigger switches tested

    4

    Exclusive Eureka pencils in this crate

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