Just had a quick question that I may or may not know the answer to.
Sometimes when I am programming offline to a CAD model, I will try to probe a feature and it will ask if I would like to change the workplane. If I choose no, I get a massively absurd feature. If I choose yes, the workplane changes and things are fine, but other features have the same issue later.
Is this because if I try to probe a circle whose normal vector lies along a plane orthogonal to the current workplane, the software can't "see" the feature? Also, will the measurement results be less precise if I don't choose the perfect workplane for each feature measurement?
I am assuming you are using measured features and guess mode. ? I cant really explain in the "correct context" but you are correct. You will never see his if you are using auto features.
Yes, and yes. The circle is calculated parallel to the workplane, so if there's a difference in angle pc-dmis is actually 'seeing' an ellipse. Circles and lines are 2D features, and need to get the direction and third coordinate from something else - for "measured features" it's the current workplane, for "autofeatures" it's the nominal direction, and for "autofeatures with sample points" it's the actual plane measured by the sample points.
Conclusion: Don't use measured features, use autofeatures with sample points.