Line Profile to single datum

[[Da...]]

I have a customer drawing calling out a Line Profile |.020|C|. I have created a 3d curve using single points (space points) and it is correct to A B C (-.0001/+.0043). However, I need to report only relative to the C datum / X direction. When I look at the X deviation for each point in the curve it should be ±.0017. I have tried the "in X direction" option in the curve window but it shows at -.0306/+.0266??

LP 020 C pic.JPG3d Curve Window.JPG

[[To...]]

I've never tried the "X direction" selection. To be honest, I've never seen that before... I need to investigate what that does.

On the drawing, is Datum C a single datum target point or a plane.? If it is a datum target point, try using Best Fit in X translation only under Evaluation. Though I am concerned the A and B elements of your alignment will influence the result, especially if profile is to C only.

If it is a plane, that will have spatial and translation control of the curve and the above may not be the best choice. I might use a Line Profile characteristic and select Datum C Plane as my Primary Datum Feature and no Best Fit in feature.

[[Cl...]]

I'm curious if there would be any difference between the 3d curve your using and a 2d curve?