The waterjet machine can cut the thickness of metal aluminum up to 12 inches, and has the advantage of cutting thicker materials that other related cutting machines do not have.. The maximum thickness of aluminum that a water jet can cut will depend on a few factors, such as the power of the water jet and the type of aluminum being cut. In general, water jets can cut through aluminum up to about 12 inches (30 cm) thick. However, the actual thickness that a water jet can cut will depend on the specific machine being used, as well as the type and grade of the aluminum. It’s important to note that the thickness of the aluminum is not the only factor that affects how well it can be cut by a water jet. Other factors, such as the shape and complexity of the design being cut, the speed of the cutting process, and the quality of the water jet machine, can all impact the final result.