I'm editing an .stl file to subdivide it for better 3D printing. I've got multiple incidents of two parts that have a distance between them that needs to be bridged with new vertices/edges/faces (not sure which term is the most accurate to use). Here's an example:
I need these parts to merge to be a solid cylinder. I tried Mesh>Merge>At Center, but that didn't work out so well:
If these parts were aligned along an axis, for instance the Z-axis, then I would simply select the complete edge of either the upper or lower piece and extrude, but that's not the case. How do I perfectly extrude geometry to make these two selections meet?