In the design space, I'm trying to ground a body or component against one of it's faces. To do this manually using the move command, it entails both a rotate & translate. But the face is at an odd angle relative to the xy-plane, so when I do it manually it ends up with some rounding error & never truly flat against the ground plane. This in turn propagates errors when I add to the design, & it ultimately fails in 3D printing because the attachment to the ground plane is not firm. I could ground a single object in my 3D slicing software, but the design includes multiple objects with print-in-place joints & links. It seems like there should be a simple solution, but I've searched & experimented for the better part of a day without success.
