Thin bar, narrow bar, and rod brass stock was purchased from a local hobby store. The concept was to tap on the top of a compass spinner but contact would only be made when the spinner has a raised portion under the tapper. This raised portion will be metal to give the shortest moment of impact.
The wide bar brass was bent using pliers and fingers since it was thin. A shape was made to hold the flanged bearing in place with the help of a rubber band. A small brass bar, 1/64" x 1/32" (0.396mm x 0.793mm) was bent around a toothpick to form a torsion spring. The spring was soldered to the spacer holder then bent so the spring reached into the space to be near the compass spinner. The spinner was supported by a small steel bearing held to the magnet by virtue of its own magnetism. The method had the advantage of self centering the pivot point and a low profile. A video was made to show the spinner working.
To do:
The rest of the posts for this project have been arranged by date.
The wide bar brass was bent using pliers and fingers since it was thin. A shape was made to hold the flanged bearing in place with the help of a rubber band. A small brass bar, 1/64" x 1/32" (0.396mm x 0.793mm) was bent around a toothpick to form a torsion spring. The spring was soldered to the spacer holder then bent so the spring reached into the space to be near the compass spinner. The spinner was supported by a small steel bearing held to the magnet by virtue of its own magnetism. The method had the advantage of self centering the pivot point and a low profile. A video was made to show the spinner working.
Bending the bar stock into a shape
Forming bar stock around flanged spacer
Thin rod stock and toothpick
Forming torsion spring
Brass torsion spring
Torsion spring soldered to spacer holder
Rubber band holding spacer to brass parts
Magnet with bearing to act as pivot
Video of compass spinner being rotated
To do:
- Install tapping weight
- Test + Evaluate
- Redesign
- Rebuild
- Repeat
Journal Page
The rest of the posts for this project have been arranged by date.
A list showing of all the final posts of COMPLETED projects.
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