How do artists address thermal expansion in multi-part polypropylene works?

Artists working with multi-part polypropylene sculptures face unique challenges due to thermal expansion, a phenomenon where materials expand or contract with temperature changes. To mitigate this, they employ several strategies. First, they design joints with gaps or flexible connectors to accommodate movement. Second, they select polypropylene grades with lower thermal expansion coefficients for critical components. Third, artists often use modular designs, allowing parts to shift independently without compromising structural integrity. Additionally, some incorporate expansion slots or hinges in larger pieces. Environmental controls, like stable studio temperatures, also play a role. By combining material science and creative engineering, artists ensure their polypropylene works remain durable and visually cohesive despite temperature fluctuations.