Extruded aluminum is a popular material for cnc boxes. It's easy to machine and has an appearance similar to wood, making it a great alternative to wood in some applications. However, it's also more expensive than cast aluminum and has limited movement capabilities
Cast aluminum is a lighter weight alternative to extruded aluminum, and it's also cheaper than extruded aluminum. Cast aluminum can be machined with less effort and yield better results than extruded aluminum, which makes it an attractive option for many applications
The main difference between these two materials is their strength; cast aluminum is heavier than extruded aluminum, so casting tends to be more expensive than extruding.
cast vs extruded aluminum for cnc