Plastic combs are another binding method that allow for the addition or removal of pages from a book. The system involves punching rectangular holes into pages, which are then slid over the fingers of the plastic comb. A standard 11" sheet would have 19 holes punched into it. The plastic combs are durable and come in a variety of colors. Book titles or descriptions can be printed on the spine of the plastic comb so that the book can be identified when it is being stored. The plastic combs allow the book to lie flat when it is open, but the book cannot be completely folded over. Books up to 1 7/8" thick can be comb bound.
pages without covers. For booklets with covers, add 1/8" to the comb diameter.
For the number of sheets shown on the left, use the comb diameter shown on the right.