I have had occasion to combine two volumes into one before binding in leather, and decided to offer it here. Some examples inclued: a Hebrew/English Tenakh (Old Testament) and a New Testament, two different translations of Old and New Testament, and a two-volume law book, If they are similar in size they will make a finished looking single volume, but some people even like 2 completely different size books combined. The covers have to be removed, the spines ground down, and then the two volumes must be carefully placed in the oversewing machine. Essentially, once the two books' spines are ground into two stacks of pages, the process is similar to oversewing one large stack of pages.
