If you have ever looked at a technical drawing and wondered, "Is that edge supposed to be sharp? How sharp is 'sharp'?" — you are not alone.
Enter . This standard is the universal language for defining the condition of undefined edges on technical drawings. din iso 13715
In the world of precision manufacturing, assuming an edge is sharp can lead to burrs, injuries, and assembly issues. Conversely, assuming an edge is broken (chamfered or rounded) without a specification can lead to unnecessary machining costs. If you have ever looked at a technical
Here is what the symbols mean: