Question regarding calculation method.

[[Ra...]]

Measuring a plastic part as shown in the image.

- Alignment -
Alignment for z , 4 circular standoffs for Z
Lines on y- y+ and x- x+ of the part to create symmetry. To lock the x-y.

-Calculation Problem -

The points on the farthest ends that are circled , gives data that is way out. All of the other inner callouts , the data seems to follow the profile.

I've tried different probes with wide range of probe diameters.

What's the best way to calculate this area ?

1.jpg

[[No...]]

How do you measure the points? Space points?
How are the parts manufactured? Injection mold?
Have you tried to scan the profile as a curve to see if there is actual deviation in that area (sink marks maybe?)

[[Ke...]]

Scan & intersect with theoretical planes at those locations?
If the preferred method is individual points, and depending on the location of this feature on the part, you may want to use a local alignment, also.

[[Ra...]]

Im not using space points, using regular points with the vector direction facing as shown in the image.

The parts are injection molded.

Ive been doing a profile on the inner diameter all the way around. Profile seems to be stable matching the inner call-outs, but the outer circled points seem to be way out and the profile doesn't show that much deviation.