Believe it or not, I recently duplicated marvel chipping. I was using a simple paper cutter to cut a 40 page legal sized document to standard 8.5X11 size. The paper cutter had a dull blade and the document wound up with what looked exactly like marvel chipping. The only problem with this is that this chipping went through the entire 40 pages. As far as I know, Marvel chipping only affects the cover. The question is, were the covers cut seperately and then later on added to the pulp pages? Anyone know?
No, but the cover paper was lesser quality stock than the interiors. Even if the blades weren't all that dull, it could cause the cover paper to tear while the interior pages (thicker, stronger newsprint stock) could still be cut cleanly.
If you look closely at the edges of a lot of Marvel comics printed in the 1960s, there will often be edge "burrs" along the leading edge of the book. The edge burrs that you see on interior page edges typically match those you see on the edges of the covers. This leads me to conclude that the covers and interiors were cut together -- collated, stapled, folded, then cut. If this had happened in any other order, miscuts (book not cut squarely) would only show up on half of the book and the edge burrs wouldn't match up on the covers and interiors.
Yes, see post #2