I need to move the edge vertices of an open semi-spherical mesh to another large mesh, a short distance away, so as to end up with a properly closed single mesh for 3D-printing purposes. I am trying to move vertices using snapping to a face as suggested in Fig 1. I thought that turning on Snapping, setting Snap-to-Face parameters, Proportional Edit off, and then Moving the separated vertices to the other-mesh faces would be the answer -- a 10-minute edit. Now, two and a half days later, after looking at every Answer, tutorial and web page I could find on Snapping, I am still dead in the water and desperate for help.
I have replicated the situation with a sloped cube and open-ended cylinder as in Fig 2 which shows the Snap settings. (I flipped one target face, in case Normals were causing the problem, but no difference in behaviour.) No matter what Snap-to-Face setting I used in Edit Mode, G X-moved vertices would not Snap to anything on the cube: Fig 3. Hitting Ctrl or A during Move made no difference, I also tried snapping vertices to another object (with the same Snap-to-Face settings), but again nothing. I closed and re-opened Blender. Same.
Finally, I realized that, in spite of the Snap button being ON, Blender never showed the little yellow circles around vertices to confirm that it was operating in Snap mode. Is this a Blender 3.0.0 issue or am I doing something wrong?
@mqbaka, indeed, the two unconnected meshes are within one object in Edit mode and Snapping is needed to connect them.