Inkssentials™ Paper Creaser, 6 in. This tool, also known as a bone folder, creates a crisp fold every time, for the neatest, easiest paper folding possible. Smooth polished finish absorbs ink and won’t transfer to your artwork. An essential tool for any paper or book artist; ideal for card making, creating envelopes, handmade books, origami, burnishing transfers, altered art projects and more.