Yes, folding knives can be used to cut tent fabrics. Folding knives are versatile tools that can be used for various tasks, including cutting through different materials like tent fabrics. However, its important to use caution and ensure that the folding knife you are using has a sharp blade suitable for cutting fabrics. Additionally, take care to avoid damaging the tent or injuring yourself while cutting. It may be helpful to practice using the folding knife on a small, inconspicuous area of the tent fabric before attempting any larger cuts.