Constructing a Skew or Part Datum Point from Parent Features The skew alignment and part datum can be constructed from one or more parent features that are contained within the Feature List when simply probing a skew line or datum point is not convenient or possible. Supported point and line constructions are specified in Constructing Features later in this section.
Skew To construct a skew line from a pair of positional features: 1 Press the Skew button.
Measure toolbar > Datum button > Skew button 2 Select the desired parent features in the Feature List, such as two circles. 3 Press the Done button to complete the construction and enter the part skew alignment into the Feature List. Measure toolbar > Done button Part Datum To construct a datum point from a single positional feature: 1 Press the Datum button. Measure toolbar > Datum button 2 Select the desired parent feature in the Feature List. 3 Press the Done button to complete the construction and enter the part datum point into the Feature List. Measure toolbar > Done button Creating a Datum by Manually Zeroing the X and Y Coefficients of a Feature Any positional feature contained in the Feature List can be used as a part datum by manually zeroing the X and Y position coefficients. The X and Y coefficients can be zeroed in the Feature Detail screen. To zero the X and Y coefficients of a feature: 1 Select the desired positional feature in the Feature List or in the Part View.
2 Press the X coefficient button and then the Y coefficient button in the Feature Detail or DRO screen. The X and Y values will become zero establishing the geometric center point of the feature as the part datum point. Select the feature and press the DRO
The center of the feature will become the datum
Press the X and Y coefficient buttons
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