"TechBuild" is not an official LEGO theme or product line name, but it is used as an informal term for advanced LEGO building, particularly within the LEGO Technic community.
Informal Term: The term "TechBuild" appears in various fan and community contexts to describe building techniques and set references related to the Technic line.
LEGO Technic: This is the actual, current LEGO theme that offers a more challenging and realistic engineering experience using specialized elements like axles, gears, and pins to create functional models with working steering, engines, and other mechanisms.
Official Products: There are no current or discontinued official LEGO products named "TechBuild".
Building Techniques: The term also relates to discussions within the community about building methods, including "illegal" techniques that place stress on bricks, which are generally avoided in official sets to ensure durability.