Datum feature on one side of an extruded shape?
[COLOR=#333333][FONT=Arial]Here is my first forum question: Imagine there is an extruded shape with two flat faces at the ends (a symmetrical thick washer, for example). One of the flat faces is called out as the primary datum feature. Which face is required to be used as the datum feature for inspection?:
1) The most favorable face,
2) The least favorable face, or
3) Both faces (using one face and then the other as the datum feature)?[/FONT][/COLOR]