My First DIY: Simplest Speed Controllable Camera Slider on Youtube?

Hi frands, this is my first try making in how to build something, so sorry for the fast cut and just visual explanation. I didn't want to bore anyone, that's why I made it as short as possible. Even though there is no detailed information, I hope you get the idea of how to make it as simple as possible by just watching. You can ask me anything

I apologize for being in this category, hand formable carbon didn't fit into any category. And i "printed" it with my hands, kind of ;)

The mechanism: The drill rolls up some fishing line that gets deflected on the other side, pulling the slide. The white stuff is felt from IKEA to reduce the friction