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use of referance planes while sketching/extruding?

Question asked by Kyle Feuchtenberger on Apr 8, 2013
Latest reply on Apr 9, 2013 by Roland Schwarz

We have a debate within our company about wether to use planes as datum's for the main locating features of the part or to use them to locate the middle of the part at all times. Also using the extrude mid plane command vs extruding with planes as datum's. Is there a benefit to doing this one way or the other? does it really matter what way it is done? I attach an example of each for clarification. I realize this is a very small difference when comparing the example parts but when it comes to more complicated parts that go in large assemblies that need engineering changes or project handoff's the differences make the transition/changes difficult.  Please advise.