If you are referring to physical hardware, the "one-piece" design is often used in high-precision kits like the Sherpa CNC Spur Gear
If you are looking to "generate a piece" in a technical context, here are the likely interpretations: g60068.mp4
, which integrates the gear and shaft into a single part to improve concentricity and reduce assembly errors. If the video is related to the LEGO McLaren MP4/4 Go to product viewer dialog for this item. If you are referring to physical hardware, the
(often associated with the "MP4" string), it involves assembling a 693-piece set. Builders often share "pieces" of content documenting the timed build process or step-by-step assembly. Builders often share "pieces" of content documenting the
Can I Build The 693 Piece LEGO McLaren MP4/4 In JUST 60 Minutes? - YouTube. This content isn't available. YouTube·Tom Mothersole Art Onshape How To:Gears
, you can add the "Spur Gear" tool via the FeatureScript samples to automatically generate the geometry based on parameters like tooth count and module.