2016-01-03 (Su) ESPeri.Impass

The printed base has an escutcheon pin installed by heating the pin with a lighter then guiding it through the printed hole. The result was a sturdy hold without glue and it was ready to use immediately. Alignment was probably going to be an issue. Problems with the last model seemed to stem from the pivot point being off-center. After the below picture was taken a new print was made with a small hole in the top instead of the large one pictured.

Escutcheon pin coming through the center hole

Several attempts failed to make a usable strip of brass. One method was to place a strip of brass on a wooden block and push a ball bearing onto the top. This mostly destroyed the soft wood being used as an anvil. Another method was pushing the ball bearings into the brass but using a steel bushing, 8mm skate bearing spacer, as a receiving tube. This method worked better but needed restraint because pushing too much would tear the brass.

Mangled brass #1

Manged brass piece #5

Video was taken of the compass spinning. Motion was fluid and the video shows the spinner returning to magnetic north twice. This print proves that a metal pivot point is important for fluid motion and the pivot point should be located higher than the magnets.

Video showing motion of spinner and return to magnetic north

To do:
  • 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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2016-01-02 (Sa)