In the early 20th century, the knife grinders of Thiers, France, were renowned for their exceptional craftsmanship. These artisans, known as “blaus,” employed a unique method of sharpening that involved reclining on wooden planks, known as “planches,” positioned above large grindstones. This distinctive ergonomic setup not only defined their craft but also had significant implications for the quality of their products and the well-being of the grinders themselves.

The horizontal position adopted by the blaus was necessitated by the design of the grindstones and the desire for precision. By laying down, the grinders could apply consistent pressure and maintain a steady angle, which was crucial for achieving the sharpest edges. The grind wheel, powered either by water or later by steam engines, rotated at high speeds, and the reclining position allowed for greater control and stability. This method reduced the risk of uneven sharpening, ensuring a uniformly honed blade that met the high standards demanded by both local and international markets.

However, this ergonomic choice was not without its hazards. The combination of high-speed grind wheels and the constant threat of flying sparks and metal fragments posed serious risks. Despite these challenges, the dedication of the blaus to their craft resulted in knives that were not only functional but also works of art, known for their sharpness and durability.

In conclusion, the unique ergonomic approach of the knife grinders in Thiers, France, was a double-edged sword. While it enabled unparalleled precision and quality in blade sharpening, it also subjected the grinders to considerable physical hardships. The legacy of their craftsmanship, however, endures, a testament to the skill and resilience of these artisans who laid the groundwork for modern knife-making techniques.