Is there a way to make a Boolean union of two objects which have at least one touching/overlapping face (same orientation)?
Let's say I have a cube and a cylinder (same size), shift the cylinder on x and y and in edit mode move up the top vertices, so the bottom ones stay overlapped:
The I'll select the cube, add a Boolean modifier with union and select the cylinder as other object.
When I then apply the Boolean modifier, the cylinder disappears either or I will have non-manifolds, because of inner geometry.
The only known solution to me is to move all the vertices on the ground layer (z 0) a tad up or down so the don't exactly overlap.
But doing this to every object I want to Boolean union is very tedious, especially when they are rotated and I can't move the vertices exactly in the right direction.
So is there an easier way?