Gears Generator This write-up covers the types of generators available, the critical parameters you must understand, and best practices for getting usable results. The phrase "piece for gears generator" most commonly refers to generating individual (or "pieces") for mechanical assemblies using digital design software . Depending on your project—whether it's for 3D printing, laser cutting, or professional engineering—there are several specialized tools available to create these parts: Online Gear Designers (3D Printing & Prototyping) gears generator