A magazine is printed with different paper, inks, and it made by ink on aluminum etched plates. (The metal is not etched, its the kodak chem layer that is hydrophylic.) The magazine is usually printed with 8 pages on each side of the original sheet of paper. The sheet is then cut (with large machines) and folded (usualy by machine), then place into a saddle sticher or glue binder depending on the size of the mag.