Canvas goods fabricators lay out, cut, assemble and repair a wide range of heavy duty products made from canvas and synthetic fabrics. These products are generally rugged and designed for use in outdoor activities and may include tents, tarpaulins, vehicle covers, banners and backpacks. Designs are marked on material and cut in a way that minimises waste. When all the product parts have been cut and assembled, they are joined together using industrial sewing machines or, if working with PVC, hot air-welding equipment. Textile fabricators also attach and/or insert ropes, eyelets, grommets and any other necessary fastenings. They may also treat products with special chemicals to protect them from rotting, and water or UV damage.