Yes, water jets are capable of cutting fiberglass. Fiberglass is a composite material made of a plastic resin reinforced with glass fibers, making it a relatively strong and durable material. Because of its composite nature, fiberglass can be difficult to cut with traditional cutting methods, but water jet cutting is an effective way to cut this material.When cutting fiberglass with a water jet, a pure waterjet is typically used, without abrasive added to the water stream. The high-pressure water stream is capable of cutting through the fiberglass without damaging the fibers or creating excessive dust or debris.One potential challenge when cutting fiberglass with a water jet is that the material can be relatively thin and flexible, which can make it difficult to hold in place during the cutting process. However, specialized fixturing or clamping techniques can be used to hold the fiberglass in place and ensure a precise and accurate cut.Overall, water jet cutting is an effective method for cutting fiberglass, providing a clean and precise cut without damaging the material or creating excessive dust or debris.