This book contains professionally designed, step-by-step plans and instructions for building three working model catapults:

The Stone Throwing Ballista, da Vinci's Spring Catapult and The Highland Trebuchet using parts and materials available from your local home center, or hardware store.

The straightforward designs require no complicated layout or joinery and include:

• A Complete Parts and Materials Shopping List
• Measured Drawings and Dimensions for All Individual Parts
• Step-by-Step Assembly Drawings
• Step-by-Step Assembly Instructions
• Detailed Construction Notes
• Step-by-Step Firing and Tuning Instructions
• A Photo of the Completed Catapult