Helical-Elliptical Gears

By Alex in Art, Gadgets, Hacks & Mods on Nov 15, 2008 at 4:34 pm

So what’s so interesting about a gear made out of wood? Take a closeer look: it’s elliptical!

Woodworker and artist Steven Garrison made helical (and helical-elliptical) gears using conventional woodworking techniques. Though such gears probably have no real world purpose, they are cool to look at in action: Link (with embedded YouTube clips – don’t miss the second one from the top) – Thanks Rob!

Also check out Steven’s helix forms that fit together.


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  1. DaveL
    Nov 15th, 2008 at 4:58 pm

    Mmmm… I suddenly have an uncontrollable desire for Reese’s pnut butter cups…

  2. SenorMysterioso
    Nov 15th, 2008 at 6:06 pm

    Ha, beat me to it Dave. Peanut butter cup is the first thing I thought of when I saw this post.

  3. JonathanRyan
    Nov 15th, 2008 at 8:54 pm

    That style of gear is actually useful for very specific applications where the speed needs to vary up and down in a regular cycle. Of course, they aren’t usually made of wood!

  4. Steve Garrison
    Nov 15th, 2008 at 10:17 pm

    Yeah, I guess they do sortof look like a reese’s peanut butter cup :) Almost got my screen covered with chili when I read that!

    I know that there are certain types of presses that use elliptical gears like Jonathan mentioned, but those are straight-cut rather than helical. I made these just to show that it can be done. I’m glad you guys like them. Please don’t try to eat it LOL!

    Steve Garrison

  5. silentwatcher24
    Nov 15th, 2008 at 10:22 pm

    mmm… chocolate gears of peanutbutter wonder…

  6. lovemeordie236
    Nov 16th, 2008 at 12:25 am

    Very intresting to look at.

  7. Rocky Rook
    Nov 16th, 2008 at 9:06 am

    How do you eat a Reese’s Peanut Butter cup? “I make gears out of them, turn ‘em around a few times and then gobble ‘em up.”

  8. Ali S.
    Nov 17th, 2008 at 12:53 am

    Darn you people! Now I want to go out and get me some Reese’s Peanut Butter Cups! :)

  9. MENLOHEAVYWEIGHT
    Nov 17th, 2008 at 4:44 pm

    Wow !!!


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