Alright. I think I finally figured out what is wrong. When I began to extrude the top face of the cube, the cube was at a slant. This was because I wanted to make the arch from bottom to top. This is probably why it is slanted. I don't know how to change the setting like you say I can, mtmckinley, but I'll look into it. If you feel like telling me, though, I'd greatly appreciate it. :smile: