A pair of raw or selvage denim jeans is quite thick, requiring special attention during the sewing process. A heavy-duty sewing machine equipped with a strong motor and construction is essential for piercing through multiple layers of such dense material. This powerful machine is not just about brute force. It helps to maintain uniform stitch length and tension while sewing denim to prevent puckering and to ensure a clean, polished finish.

double foot sewing machine. By feeding fabric through the machine evenly from both sides, this type of sewing machine produces consistent and reliable results, even when working with challenging materials.