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Electric Pencil Sharpener

$39.95

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!

SKU: ESHA-F1849 Category:

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

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