Binding Styles

SADDLE STITCH BINDING
Saddle Stitching: Wire staples are inserted through the fold of gathered pages. Rule of thumb: maximum spine thickness is typically 1/4" which is equivalent to 88 pages of 100# gloss book text plus a heavy cover or 128 pages of 80# gloss book text plus a heavy cover. Thicker books (up to 1/2" spine) can be stitched on special heavy-duty equipment, but please consult with MGTL early in the design process if you are planning a saddle stitched book that is very thick or has unusually large or small height and width dimensions.
Loop Stitching: A variation of saddle stitching where the staples form wire loops for inserting into a three-ring binder.

PERFECT BINDING
Glue is applied on the spine to bind pages and cover together. There are a number of perfect binding methods, depending on function and budget. Minimum thickness is 1/8" if printing is required on the spine or 1/16" if the spine is not printed. Maximum spine thickness is approximately 2.5". Disadvantage: most perfect binding styles don't lay flat when opened.

MECHANICAL BINDING
Spiral Binding: Single sheets are punched and plastic spiral is wound through the holes. Maximum thickness is 1.25"; maximum spine length is 20". Many colors are available. Disadvantage: sheets follow the spiral and are slightly offset when the pages are turned.
Wire-O® or Double-Loop Binding: Single sheets are punched with slotted holes and a specially-formed wire is inserted. Wire can be exposed, fully concealed, or semi-concealed. One advantage over spiral binding is that pages align when turned. A number of wire colors are available. Maximum thickness is 1.25". For details see Wire-O (Double Wire) Binding System.
Velo Binding: Inexpensive fused plastic binding in which plastic teeth are inserted into a punched document and held by serrated edges on the teeth of the plastic or by using a hot knife to cut off the excess end of the teeth and then melting a plastic strip to the end of the comb. Two plastic strips are used. One strip has the comb teeth that are inserted through the holes in the paper. The other has holes through which the teeth are pressed and then cut off and the end fused.
Comb or GBC® Binding: This binding uses a piece of rigid plastic that is die cut in the shape of a comb and rolled to make a cylinder. A machine holds the comb open and pages are manually inserted over the teeth. Maximum size: 2" thick and 14" long. Disadvantages: plastic is not as durable as other methods and the book won't open flat.
GBC® Binding: General Binding Corporation's trade name for plastic comb binding. See Comb Binding.
Chicago Screw or "Screw and Post" Binding: If pages of a book need to be added or removed after the binding is made, or if the exact number of pages to go in the book has not yet been determined, a good solution is "Chicago screw" binding. A Chicago screw consists of an aluminum "screw post" of any of various lengths with a "cap" at one end, and a screw that threads into it at the other. Both the screw post and the screw have large flat heads to hold the pages when the two parts are screwed together. Text and cover are simply drilled, as with 3-ring binder stock, and screwed together. Screws can be left exposed or concealed. Available in stainless, aluminum, brass, black or white or clear plastic.

CASE OR HARD BOUND BINDING
Method of book binding in which pages are usually sewn together with thread and adhered to a hard cover made of rigid boards covered in cloth, leather, paper, or plastic, which extends slightly past the interior pages. Also called hard cover or edition binding.