Din Iso 13715 __exclusive__ Today

Disclaimer: This post is for informational purposes. Always refer to the latest official DIN ISO 13715 standard document for absolute compliance.

Enter . This standard is the universal language for defining the condition of undefined edges on technical drawings. din iso 13715

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. Disclaimer: This post is for informational purposes

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. This standard is the universal language for defining

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.

![Example symbol structure: A triangle-like figure with a line pointing to the edge, plus a numeric value.]

Here is what the symbols mean: