It works — until it doesn't. Then the CMM doesn't care about your "general note." It only reports: out by 0.03 mm .
Because no one checks flatness on every sheet metal bracket. No one validates perpendicularity on a turned shaft — unless the fit screams otherwise.
But here's the deep cut:
— straightness, flatness, circularity, cylindricity, parallelism, perpendicularity, symmetry, runout. All the invisible governors that prevent a part from lying about its shape.
So use mK for the non-critical. But never forget — The parts that fail in the field are rarely the ones you toleranced tightly. They're the ones you assumed would behave.
No fancy callouts. No geometric stacks. Just four letters that whisper: Trust the process.
But then comes a drawing block labeled:
It works — until it doesn't. Then the CMM doesn't care about your "general note." It only reports: out by 0.03 mm .
Because no one checks flatness on every sheet metal bracket. No one validates perpendicularity on a turned shaft — unless the fit screams otherwise. iso 2768 mk
But here's the deep cut:
— straightness, flatness, circularity, cylindricity, parallelism, perpendicularity, symmetry, runout. All the invisible governors that prevent a part from lying about its shape. It works — until it doesn't
So use mK for the non-critical. But never forget — The parts that fail in the field are rarely the ones you toleranced tightly. They're the ones you assumed would behave. No one validates perpendicularity on a turned shaft
No fancy callouts. No geometric stacks. Just four letters that whisper: Trust the process.
But then comes a drawing block labeled: