Yes, aluminum coils can be cut with a saw, but it's important to use the right type of saw. A hacksaw or a fine-toothed metal cutting saw is suitable for cutting aluminum. Lubrication is also crucial to reduce friction and prevent the saw blade from overheating. When cutting aluminum, it's advisable to use a cutting fluid or a light machine oil to keep the blade cool and ensure a clean, smooth cut. Always follow safety precautions and wear appropriate protective gear when cutting metal.