CREATING A VIRTUAL REALITY (VR) LOCOMOTIVE... 3D PITFALLS

Creating complex objects in 3-D is challenging enough,  but since everything has to live in its own 3-D space, rotating your view early and often can prevent my little mess-up shown below.

It can still be aggravating, since moving the latest pipe can often mean re-creating the entire thing. Particularly since the top and bottom of the pipe are on completely different 3-D planes with separate origins.

pipes look fine in this view

Rotate things and oops.....

Just moving it back a tad makes it run into another pipe and both the top and bottom no longer mates up with its fittings.

Ignore it and hope nobody notices? Nope, that compromises the whole drawing, Can't do that.