DIY Tick Stick Solves Curves

The "tick stick" is a deceptively simple tool with a long history, known by various names including "joggle stick" and "speil stick." Its origins are traced back to 19th-century British shipwrights who needed a reliable method to fit bulkheads and other components to the curved hulls of ships. The tool's genius lies in its independence from literacy and standard measurements, relying instead on a series of indexed points to capture a shape. The process involves a pointed stick, often with unique notches or curves, and a "story board" (a piece of scrap material like cardboard or MDF). By placing the stick's point on key locations of the irregular surface and tracing its distinctive shape onto the board, a user creates a series of reference marks. This "point cloud" of outlines is then transferred to the material being cut by repositioning the stick within each tracing and marking the location of its point. While invaluable for woodworking and boat building, the tick stick's applications extend to any project requiring a precise fit to an irregular surface. This can include creating custom countertops for uneven walls, fitting panels in a van conversion, or even mapping out the shape of stonework for a fireplace hearth. For curved shapes, more "ticks" or reference points are taken to ensure an accurate transfer of the contour. In an age of digital fabrication, the tick stick stands as a testament to analog ingenuity. While 3D scanning offers a high-tech alternative for capturing complex geometries, it comes with a higher initial cost and learning curve. The tick stick, in contrast, can be fashioned from a scrap piece of wood in minutes, offering a cost-effective, portable, and surprisingly accurate solution for one-off projects and hobbyists.