I'm still new to Blender so I don't know all of the terminology and can't seem to phrase my question properly. But I am learning every day to model for 3D printing. Mainly custom PVC fittings to build things.
My current project requires that I take a flat surface (the top of a cylinder) and move it (maybe extrude is a better term) to the curved surface of another cylinder to merge the 2 meshes. I don't want to go past the surface since the object is hollow. What I have done in the past is overlap objects and then complete union and difference Boolean operations to cut and merge objects. But when I use the 3D tools in this project to diagnose issues I can't seem to resolve the issues. I visually cannot "see" the issues to resolve them.
So I want to see if it is possible to manually move the vertices / flat surface to the curved surface "manually" so that I can see if this will be a better workflow or produce the desired results without errors (or minimal errors).
Update: Here's what I did and the errors that I received in the 3D-Print panel.
Then I removed the upper section of the differenced mesh since I do not want that any longer. (I just selected and deleted the vertices - there may be a better way but not too sure how to do so just yet.)