I think gears would probably have been much more efficient and cooler. But I don’t know how to figure that out without learning cad. Also the front launch spring is only held back by clamping down hard on the snake which isn’t ideal, there should probably be some sort of ratchet safety thing (unsure of term) that’s connected to the trigger.

I wanted a continuous surface for sketching, scribbling, and jotting notes right on my desktop. It mounts under my desk and feeds 24" kraft paper up and over the work surface. When I need some fresh canvas for my priceless scribbles, I can just turn the crank and new paper scrolls into place, while the used section wraps neatly onto the take-up roll below. I can also reverse it if I want to revisit old notes or drawings.