Modular Block&Tackle Pulley. You may build this tool with two or more pulleys per block. A Block&Tackle Pulley, make possible load elevation in a twice ratio based on number of pulleys. E.G. a Block&Tackle Pulley with 3 pulleys per block, has a 1:6 ratio, i.e., you lift a load, with 1/6 pull force. Best print with PETG filament, 4 perimeters.
The author marked this model as their own original creation.