When creating a box with Ortho enabled in the Top view, it initially aligns correctly. However, switching to the Front view reveals a significant vertical offset (Z-axis). The box appears floating or sunken rather than sitting on the ground plane.
Troubleshooting Attempted:
Reset CPlane (CPlane → World Top).
Used Box with 3Point option + explicit coordinate entry.
Disabled GridSnap/Osnap → No change.
ResetPlane and restarted Rhino → Issue persists.
Here the steps graphically:
If you go into Rhino Options and find the Construction planes setting you likely have it set to Standard construction planes. This means that each viewport has its own, independent construction plane. This can be confusing. Note that the grid you see on screen relates to the construction plane, not the world, so in this case the grids are not necessarily related and you can’t say that items are misaligned. The items are aligned but the grids are not. Changing the construction plane in one viewport moves its grid but the others remain where they are.
Life gets easier if you choose the Universal construction planes option as that ties the construction planes together and ensures the grids are synchronised.
p.s. As an experiment, create a sphere centred at the world origin (type w0 in the command line) and with a radius of 1000, say. Then see how each viewport’s grid relates to the world origin (you may have to zoom the views).
