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Make Pt0423
Clever way to sharpen knives, Science And Mechanics 1936 – Link.


Knife sharpening tricks (video) – Link.

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.



  1. Juancho says:

    This knife-sharpening service still exists in my country (UY), although much rarer than 35 years ago.

    The man announces himself by playing a distinctive tune on a panpipe.

  2. Jared says:

    I saw these in Uganda. It was a slightly different design. you had to ride it backewards

  3. Freddy says:

    That’s great! Like something Grandpa would make.
    The guy on Boingboing apparently has the grinder assembly fixed with a third pulley on the seat post to tension the belt… Better design. Cool mobile shop! Very practical, doesn’t need gas, and keeps you in shape.

    It would be fun to add a disk sander, circular saw and drill press, too! And perhaps a blender for pinacoladas…

    Love the guy working in the parking lot, too. Sometimes, playing in the dirt with a broken hammer, the inspiration just comes to you! I’ve had a few of those moments.
    And the comments about the drill – did he use a welder to remove charge memory from the batteries somehow?