2023-09-05 (Tu) GrinderCompassMKII Tunable string positioner

I wanted to continue exploring the elastic cord to hold a brass bead. So long as I suspended it from two sides, there was minimal side-to-side motion, and a knot inside the bead kept it from shifting around on the string. I decided to make an oversized copper frame to test a few ideas about controlling the material and seeing how much space I needed for everything. I drafted a large square jig to make the frame and four arms to form a couple of pincers to hold a bead.
Large frame and string positioning apparatus

The captive bead guided the string, and the pincers let me point the bead in any direction I wanted. I need some testing to find the ideal string length, hoop diameter, and bead count, and then I can tighten up the design if it works.
The beads let me point the elastic string

GitHub files for GrinderCompass
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
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8
Completed projects from year 9
Completed projects from year 10

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