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Trammel Ruler — image 1
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Trammel Ruler

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Model information

Category
Tools
License
Creative Commons — Attribution

A tool to make straight lines along a straight edge at an offset. 

Easy print. See orientations below

Fully customizable Fusion 360 and STEP files included.

Printing

There are two options for the slide and head as I have included a layer to improve bolt hole quality. Those files carry the additional _hole_trick in the file name.

Hardware

  • M3 Screws
    • 16mm+ for clamp
    • 8mm for fixing pen/pencil
    • 2x 16/20mm for fixing slide to arm
  • A pen or pencil.
  • M3 Nut
  • Glue (optional) would be useful to secure the nut.

Customization

The fusion file has two parameters:

  • arm_length_cm: should be a whole number and dictates the length of the arm where you mount the pen.
  • slide_height: mm value that dictates the height of the slide could be useful if you need a smaller one for tight spaces or a longer one for larger jobs and extra stability.

 

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