Saddle-stitching, along with side-stitching, are together identified as wire stitching and is one of the most economical and common binding options. It gives the impression of stapling; however it is not the same. It is created by punching wires through the document’s spine at the exterior and then twisting the wire horizontally on the inside center fold to clench all the pages. Simply put, the pages are stacked and then stitched through the fold with staples made of thin wires. The main limitation of saddle stitching is that the book should not exceed around 80 pages.
Magazines that are not glued are saddle-stitched. This binding method is very straightforward.
Why is it called Saddle-Stitching?
A book binding method that places wire staples through sheets of paper, called saddle-stitching may sound quite strange, but with regards to the printing industry, stapling is commonly called stitching. Moreover, the term saddle is coined from the look that the sheets have when draped over a saddle-like piece of equipment during the stitching process, hence the name saddle-stitching.