Kitchen cutting boards made out of wood are typically smooth due to several manufacturing and finishing processes. Here's a general overview of how they achieve their smoothness:
Material Selection: High-quality cutting boards start with carefully chosen wood. Hardwood species like maple, walnut, cherry, and bamboo are commonly used because they are dense, durable, and less prone to knife marks.
Sanding: The initial step in the manufacturing process involves sanding the wooden surface. This removes any rough spots, splinters, or imperfections on the board's surface, resulting in a smoother texture.
Planing: After sanding, the cutting board may go through a planing process. Planing is the process of shaving off thin layers of wood to ensure the surface is even and flat.
Cutting and Shaping: The wood is then cut and shaped into the desired cutting board dimensions. The edges are often rounded or beveled for a more comfortable grip.
Finishing: The finishing process plays a crucial role in achieving a smooth surface. Food-safe finishes, such as mineral oil or beeswax, are applied to the wood. These finishes penetrate the wood fibers, providing moisture resistance and a smooth, polished look.
Sanding (Again): In some cases, a final sanding step may be done after applying the finish to ensure an even smoother surface. This step helps to remove any raised grain caused by the finish's application and further enhances the smoothness of the cutting board.
Buffing and Polishing: Some manufacturers buff and polish the surface to achieve an extra level of smoothness and shine. This step is optional and not all cutting boards undergo this process.
It's important to note that even with all these processes, wood is a natural material, and some slight texture might still be present, especially after prolonged use and regular cleaning. Regular maintenance, such as periodic oiling and proper cleaning, will help keep the cutting board smooth and extend its lifespan.