I am new to cnc and have just about got the basics of using my 3 axis cnc router to mill 3d reliefs in timber. I now need to learn how to 2d cut sheet metal with the same machine if possible.
I want to cut 2d shapes in sheet alu and copper, 1mm to 2mm thick, using my cnc router without coolant (if possible). Could someone please advise on the sort of cutter I will need and where to buy one. What sort of spindle speed and feedrates would I need for this operation?
I also want to engrave lettering onto the sheet metals with the same machine if possible. Again, can you advise on cutters please.

This is my machine, although mine is controlled by dsp pendant instead of Mach 3 (for now, I plan to convert it). EXEL CNC SL6090 Pro

Thanks in advance. Chris