Din - Iso 13715 [hot]

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

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. din iso 13715

![Example symbol structure: A triangle-like figure with a line pointing to the edge, plus a numeric value.] The Most Common Mistake Do not write: "Break all sharp edges

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

Here is what the symbols mean: