Bone foldersBone folders made of (L-R) Teflon, teflon, bone and wood
A bone folder, bonefolder, or folding bone is a dull-edged hand tool used to fold and crease material in crafts such as bookbinding, cardmaking, origami, and other paper crafts that require a sharp crease or fold. The tool was also used when correspondence by letter writing was more formal and an art.
Bone folders may be made from the leg bone of a cow, deer, or similar animal; ivory; or plastic. Those made from bone may be less likely to leave residue on the workpiece.
In Japan, the equivalent folding tool is traditionally made from bamboo, although alternatives include a Japanese fabric marking tool (hera) and a Western bone folder.
↑Zeier, Franz (1983), Books, Boxes and Portfolios, translated by Li, Ingrid, New York: Design Press, pp.30–37, ISBN0-8306-3483-5
↑Smith, Keith A. (1999), Non-Adhesive Binding: Books Without Paste or Glue, vol.1 (Revised and expandeded.), Rochester, New York: Keith Smith Books, p.47, ISBN0-9637682-6-3
↑Pickering Rothamel, Susan (2008), The Encyclopedia of Greeting Card Tools & Techniques, New York: Lark Books, p.42, ISBN978-1-60059-029-0