Din Iso 13715 Link

For sharp edges that must cut (e.g., cutting tools, scrapers), write: "Edge max R 0.05" or "Sharp edge permitted – handle with care" (though the latter is rare in modern standards). The Most Common Mistake Do not write: "Break all sharp edges." This is subjective. Does "break" mean 0.1 mm or 1.0 mm? It depends on who is reading.

Simply put: It tells the machinist how to treat the "leftover" edges—those small intersections between two surfaces where no specific radius or chamfer is called out. din iso 13715

Enter . This standard is the universal language for defining the condition of undefined edges on technical drawings. For sharp edges that must cut (e

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. It depends on who is reading