Bone for folding and burnishing - Length 20 cm
Bone serve above all to fold sheets of paper and paperboard or increase the bending.
It can also be used to press the adhesive tape after application to make it adhere better.
It can serve, finally, to make grooves on paper or paperboard in order to facilitate the folding of the sheet.
It is used widely in conservative framing, in bookbinding and other crafts.
It is normally obtained from the leg of an animal. They exist also in plastic but their performance is poorer.