“To demonstrate how simple and multiple chain hoist/pulley block work we need to have one or more pulleys. A functional single or multiple pulley is the result of this project. It can demonstrate the transmission of forces and weights in physics. During the design and construction process, the use of basic 3D geometry has been used. To create the pulley, which consists of three parts, the addition and subtraction of basic geometric shapes has been used. The pulley wheel is formed by a cylinder and torus subtracted from it. Pin wheel consists of the addition and subtraction of cylinders and the pulley housing is formed by a cutaway cylinder, from which other cylinders and cubes are subtracted. To create a multiple pulley, the number of wheels of the pulley can be set parametrically. All parts are designed for 3D printing.”