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Trammel of Archimedes

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Creation quality: 5.0/5 (1 vote)
Evaluation of members on the printability, utility, level of detail, etc.

3D model description

This mechanism consists of a base with two slots intersecting at right angles. Two sliders are confined within the slots and are attached to a handle by pivots (screws) at fixed positions along the handle. The mechanism can be used for drawing a perfect ellipse. This is done by positioning a writing utensil at the end of the handle while making a full revolution.

With that said, it is often sold in novelty shops with interesting names like Bullsht Grinder, Bullsht Masher or Do-Nothing Machine. Interestingly, most of the names are preceded with state names such as Arkansas, Kentucky, etc. I guess that’s how locals make fun of their neighbors.
More Info / Build Instructions: https://www.instructables.com/id/Trammel-of-Archimedes/
Animation: https://youtu.be/NiEOJxK4AYA

3D printer file information

  • 3D design format: STL Folder details Close
    • Base.stl
    • Knob.stl
    • handle.stl
    • slide.stl

    Learn more about the formats

  • Publication date: 2017-12-13 at 16:58

License

CC BY

Creator

Designs 72
Downloads 4.8k
Sales US$25.07
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I like to design and build random things.
See other projects here:
Instructables

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