Bone

Bone is a rigid organ that constitutes part of the vertebrate skeleton. It is a composite material made of both organic (collagen) and inorganic (calcium phosphate) components.

Description of what it is like

Bone is hard, usually white or off-white, and has a smooth texture when polished. It is less brittle than stone and can be carved or shaped.

Origin and where to find it

• Environments: Anywhere animals live or have died.
• Signs: Skeletal remains found in nature or obtained from hunted animals.
• It is a natural material.

Minimum processing required

• Cleaning: Removing all flesh, fat, and marrow.
• Degreasing: Boiling or soaking to remove residual oils.
• Bleaching: (Optional) Using sunlight or chemicals for a white appearance.
• Shaping: Sawing, filing, or grinding into the desired form.

Tools needed to work on it

• Knives and scrapers for cleaning.
• Saws for cutting.
• Files and abrasives for shaping and polishing.
• Drills for making holes.

Common forms of use

• Raw: As simple hammers or clubs.
• Processed: Carved into needles, hooks, buttons, or handles.
• Ground: Into bone meal for fertilizer.

Possible substitutes

• Wood: For handles and some tools.
• Stone: For harder tools.
• Plastic: Modern alternative for small items.

Limitations and common failures

• Brittleness: Can snap under extreme pressure.
• Degradation: Will eventually break down if buried in acidic soil.
• Heat Sensitivity: Can become brittle or char if exposed to high heat.

Risks and safety

• Sharp fragments: Can cause puncture wounds.
• Biological hazards: Raw bone can harbor bacteria if not properly cleaned.
• Dust: Inhaling bone dust during grinding should be avoided.

Related materials

• Leather: Often obtained from the same animals.
• Antler: Similar to bone but usually denser and grows differently.
• Ivory: A very dense form of bone/tooth material.