I am trying to write something on drawing a progressive curve but I have no idea what to call it. An example would be that I attach a 14" string with a pencil in the end to a 12" diameter circle, as I start drawing my radius the string wraps around the circle shortening my radius.
Spiral?
Here you go: Involute - Wikipedia
Thats it, this place never fails me!
Sorry it took us over half an hour. We’re usually more on the ball. 