That was extremely helpful. Thanks!
BTW, when rendering cubes of material it seems like each facet of the sides of the cube has a different reflection of the underlying surface.
I.e. suppose I place X objects (small, flat and extruded) on a plane, then place an extruded transparent glass cube on top. Then I look at it in an isometric view... I see X objects in one facet, and X objects in another and each are scaled differently. In other words I'm seeing 2X total, where there are only X objects.
Any ideas?