Bookbinding/Equipment

Bone Folder
A bone folder is a tool used to apply pressure for creasing paper and pressing glued surfaces together without leaving a residue on the work. It is shaped vaguely like a knife, but with only smooth, dull surfaces. As the name suggests, traditional bone folders were made out of the bones of animals. Today, bone folders are made out of both bone and various plastics.

Paper knife
The traditional name for a paper knife is a 'shoe knife', used to cut paper a bookbinder uses this in conjunction with the bone folder to fold and cut paperinto 'signitures' (grouped pieces of 2 or more sheets of paper folded against with the grain)