This is a double pendulum with a radius of 2 ft. I mounted it on a 4 ft diameter circle of plywood painted with glow in the dark paint. The short arm holds a UV laser pointer on the end of it that traces the path the pendulum takes on the glow in the dark paint.
This was actually the reason I started this thingiverse account anyway, it
Is nice to see a project come together.
polylite and eryone pla
Long arm - 40, other arm - 99, mount - 50
black and white