
How I can make it vertex to snap to vertex of model connect to other model? I did watched the youtube, I not hear what this person say? not fair to you guys can hear the tutorail youtube speak sametime show how make the model. That why I post and ask you guys can help me out with model, so I can learn from you guys.
I create half 1/4 pipe brick look like this

I almost forget ask this, when I select the line to face top, not bottom?