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Humidity plays a significant role in woodworking because wood is a hygroscopic material, meaning it absorbs and loses moisture in response to changes in environmental humidity. When the humidity increases, wood tends to swell as it takes in moisture, whereas in drier conditions, it can shrink as it loses moisture.

This fluctuation in size can lead to several issues in woodworking projects. For example, as wood swells, it can create gaps in joints and affect the overall fit of assembled pieces. Additionally, during finish application, if the wood’s moisture content is not stable, it can impact how stains and finishes adhere and dry, potentially leading to uneven finishes or peeling.

Understanding the effects of humidity on wood is crucial for cabinetmakers and woodworkers because it directly influences the quality and durability of their projects. Therefore, being aware of humidity conditions and managing them effectively is essential for successful woodworking.