Good way to cut a slot in aluminum?

Keyhole Slot G Code - Projects how to make a keyhole slot in wood with a drill Generally the easiest way to create the deeper recess is by drilling; if you route out the mortise it might seem obvious to use the router how to play slot tournament When using a keyhole router bit, the cutting edge is plunged into the workpiece, and the router is moved along the desired path to create the slot The pilot

how to read a slot machine Yep, drill out the ends, maybe one or two centers hole , then clean