Which type of fabric is known to be sensitive to heat during sewing?

Synthetic fabrics are known to be sensitive to heat during sewing due to their plastic-based fibers, such as polyester, nylon, and acrylic. When exposed to high temperatures from an iron or an overly hot sewing machine, these materials can melt, shrink, or become distorted. It is crucial to use lower heat settings and appropriate pressing techniques when working with synthetic fabrics to avoid damaging them.

In contrast, natural fibers like cotton, linen, and wool have different heat tolerances. While they can also be affected by excessive heat, they generally handle pressing and sewing with higher temperatures better than synthetics. Understanding the properties of various fabrics and their reactions to heat is essential for achieving the best results in sewing projects.