2015-12-15 (Tu) ESPeri.Impass

Revisions were made to the spinner to make a continuous circumference. Magnet holders were modeled with the intention that they might be positioned within the borders of the spinner. They could even be arrayed around the outside with more than two magnets for greater magnetism and more inertia. Effectively a magnetic ring could be built from inexpensive disc magnets. This revision also accounted for larger magnets which could be purchased locally.

Model of spinner

A base was modeled which had a central cone for suspending the magnet spinner. The cone on the base was a sharper angle so it would make minimal contact with the spinner’s inverted cone shape. A wall around the border was added since the final product will be enclosed. Previous models which didn’t use a 3D printed relied on brass screws as the points where the spinners were suspended. This was considered but not used since the dimensions for brass bolts cannot be carefully controlled in the model and new screws would have to be sharpened for each revision or the old versions would be dismantled to retrieve the screws. This way old models can be kept for reference.

Spinner and base screenshot

To do:
  • Model parametric spinner
  • Make free spinning base
  • Optional:
    • Add compass rose to spinner
    • Add holes to reduce plastic
  • Add “keyed” features to only allow slop when facing north
  • Make handheld haptic compass
  • Make compass work from pocket or necklace
  • Miniaturize

The rest of the posts for this project have been arranged by date.

First time here?

Completed projects from year 1.
Completed projects from year 2

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2015-12-14 (M)