How does manual machines work?

Manual machines operate through human input, where the operator physically controls the machine's movements and functions. They typically rely on levers, gears, and pulleys to transmit force, allowing users to perform tasks such as cutting, shaping, or assembling materials. The efficiency and effectiveness of manual machines depend on the skill and technique of the operator, as they must precisely manipulate the machine to achieve the desired outcome. Examples include hand-operated lathes, drills, and woodworking tools.