https://www.youtube.com/watch?v=YDQCUdo1WXQ When you look at Joseph Joseph's Spaghetti Measure, you instantly see a resemblance to a camera's aperture/shutter. The spaghetti measure borrows a rather nifty mechanism
OX CNC and the Everman drive system. First, applying double-sided tape to the timing belt. Then securing the belt in the v-slot. drive belt under the wheels and over the pulley. Keeping top belt taught and sliding gantry onto the v-slot.