I am working on my projection screen masking system (to cover up the top and bottom "gray" bars on the screen).
Anyway, I found a really simple system that uses 2 pulleys (one on the left, and one on the right) that allows for the top and bottom "masks" to move together, so if I lower the top mask, it pulls on the cord, over the pulley, and pulls up the bottom mask as well.
Anyway, I picked up the smallest pulleys I could find, but they still aren't really small. Now I need some cord, rope, string, whatever, in black to connect everything up. I am having a hard time finding anything. I would think that it would need to be 3mm - 5mm in width, and I need about 20 feet of it to make sure that I have enough.
I've seen various types of materials used, but does anyone know what would be strong yet fall within the 3mm-5mm width, and of course be black, and fairly cheap? I know it is a crazy request, but Dr. Google is helping me find stuff, but I am not sure what materials would work best.
