Which property of man-made boards helps prevent warping or twisting?

The property of man-made boards that helps prevent warping or twisting is their stability against temperature changes. Man-made boards, such as MDF (medium-density fiberboard) and plywood, are engineered to have uniform density and a consistent structure, which allows them to be less susceptible to the influences of humidity and temperature variations. This stability is crucial because natural timber, with its inherent grain patterns and variations in moisture content, can expand or contract in response to changing environmental conditions, leading to warping or twisting.

In contrast, man-made boards are designed to minimize these risks, resulting in products that maintain their shape and structural integrity over time, making them suitable for a wide range of applications. This characteristic is particularly valuable in furniture and construction, where stability is paramount.