Hi, I just purchased a Chinese CNC machine and although it came with a few bits to get started with I obviously need to get a few more and of a greater variety. At the moment I am just concentrating on doing PCBs and although I have a few engraving bits (the traingular ones), I think I would prefer to 'hatch' my boards. Not sure if that's what it is called but basically, I want to remove all the material other than the pads and the wires as opposed to simply contouring the board. I imagine I need some sort of bit with a flat bottom and one that is rather thin to fit in between the tracks, do these exist?
Also, I will need some drill bits for drilling holes obviously.
What are some good brands for drill bits? What materials for the drill bits should I be looking at? I'm after good quality bits, not diamond ones (which I'm sure exist) but ones that don't dull down after 5 minutes or snap with the same frequency.
Finally, I would also like to get some drill bits for good quality plywood for routing various bits and pieces out of but to be more precise, these bits and pieces will have fine, square features on them so I would imagine I need as thin a drill bit for this application as possible (I'll have to sand it by hand to get perfect squares afterwards but still) but at the same time thick enough not to snap, what would be the suggestion here? What type of drill bit would I need for this?