This was my first minimum viable prototype 2 cable ties, a packer made of scrap paper. and 2 3D printed wheels wrapped in tape.
Here is a slow mo video of the Mark 1 working. It does work, but when it when wrong, it would rapidly tangle up a big knot around those wheels.
Mark 2 adding a trumpet to guide the string into 2 toothed wheels and 3D printed housing, Cad 3D Modelling in Solidworks - my tool of choice :) Here’s me playing with Keyshot rendering.
The Mark 2 worked well, but with heavier string, those 3V motors were underpowered, even when I ran them at 6v!
Here are the parts plated up ready for printing on a Prusa i3. The Prusa is so much better quality than the Makerbots we have at work.
The latest iteration is the Mark 3, it has bigger motors and a better trumpet, here it is working, each iteration is more reliable than the previous.
This project is ongoing, the next stage will be to understand the variables; String weight, Power/torque/speed and to keep progressing the reliability. Then I have a Kinetic art idea for this to explore…