How to make a screw video

I'm lucky, in my trade I got to see lots of industrial processes. Metal coating, heat treating, powder coating, color printing, various incineration processes, including regenerative. Asphalt production on a large scale, bagel making, polymer extrusion, rubber vulcanizing - gym mats and the inside of your sneaker. And Life-Like Products making fake grass for model railroads. Basically a giant blender for sawdust and green dye.