Brief description

A shovel is a tool for digging, lifting, and moving bulk materials, such as soil, coal, gravel, snow, sand, or ore. It is an evolution of the simple digging stick.

Use / Function

• Digging: Excavating trenches, holes for posts, or foundations.
• Agriculture: Turning over soil, planting, and harvesting root crops.
• Construction: Moving loose materials like sand, cement, or earth.
• Scale: Individual.

Operating principle

It combines two simple machines:

• Wedge: The sharp edge of the blade cuts into the material.
• Lever: The long handle allows the user to lift heavy loads with less force using the hands as a fulcrum.

How to create it

1. Blade Selection: Find a flat, broad material. A large animal shoulder blade (scapula), a flat stone, or a carved piece of hardwood.
2. Handle: Select a straight, sturdy branch.
3. Assembly:
   • Bone/Stone: Lash the handle to the blade using wet rawhide or strong cordage. A split-stick mount can hold a stone blade.
   • Wood: Can be carved from a single piece of log (monoxylous).
   • Metal: Forge a blade with a socket to accept the wooden handle.
4. Technical level: Basic to Intermediate (depending on material).

Materials needed

• Essential:
  • Blade: Hardwood, Bone (Scapula), Stone, or Metal.
  • Handle: Strong wood (Ash, Hickory).
• Tools: Knife, Axe, or abrasive stones for shaping.
• Substitutes: Digging stick, large shell, hands.

Variants and improvements

• Digging Stick: The simplest precursor; a sharpened stick hardened by fire.
• Spade: Designed specifically for digging, often with a flatter blade and shorter handle.
• Square-point shovel: Better for moving loose material from a flat surface.
• Round-point shovel: Better for digging into hard ground.

Limits and risks

• Durability: Wooden or bone shovels wear out quickly in rocky soil.
• Ergonomics: Improper use can lead to severe back strain or repetitive strain injuries.
• Efficiency: Moving large amounts of earth by hand is extremely energy-intensive.