On extruded objects based on a sketch with splines in the profile, there are discrepancies between the areas and volume calculation. For example, the attached is a extrusion with a thickness of 1 mm. You would expect that the cross sectional area of the original profile would be numerically equal to the volume of the part. Using the Body Properties method after opening the file, the volume is 388.267 mm3. Using iProperties, the volume is shown as 388.030 mm3. After iProperties has been run, the Body Properties does report the same 388.030 mm3 value. While editing the sketch and using the Region Properties inspect command, the cross section of the profile is reported as 387.302. These differences only seem to show up on profiles with splines in them. It seems that there should be more accuracy and consistency on the reported results.
