First of to cut steel, stone the machine should have an appropriately massive structure for stability and stiffness and should use a coolant.
5axismaker milling system was designed with specific proportion of cutting volume to its size and wasn't designed to cut chunks/blocks of aluminium.
It cuts styrofoam, modelling foam, tooling board, acrylics, plastics such as Delrin, ABS, machining wax, cork, any hardwood (on video it mills Sapele)
To cut harder material like aluminium, steel, stone we provide a special mounting bracket that can be used to attach a water-jet cutter or some other specialised tool to 5AXISMAKER. We've designed 5AXISMAKER as an expandable and customisable platform.