I need to find Symmetricity of to ends DClin2 and DClin3 with reference to Datum-D. So first I constructed mid Lin of DC lin2 and DC lin3. They are 103 mm.distance away from each other. I don’t know wheather hole can be considered directly as a Datum D. If not, I would construct a vertical line passing through hole Datum D just like DC lin2 and DClin3. And consider this construct line as a Datum D. In this condition I may need Lin vector and surface vector to construct line. I would consider line vector 0,1,0 and surface vector 0,0,1. Do I have to change work plane to construct this line? If yes, would it be -x work plane? Because it is located 51.5 mm from origin and x coordinate remain same.
