Re: [CAD_CAM_EDM_DRO] milling fine detail in metal

Bernard.writes:

>Im sure the mill type plays a big role in how much cooling is needed. Is
>brass the easiest metal to cut at reasonable any speed.
>I have found Iron to be very hard
>aluminium is very sticky and so on

Not all brass is alike. Ordinary half hard sheet brass (alloy 260) tends
to be muddy to cut and raises burrs. Brass bar stock (alloy 360) behaves
much more nicely under a cutter, but tends to have dimensional stability
problems (if you cut one side off, it will potato chip) The most well
behaved brass is leaded engravers brass (alloy 353) Really nice to cut,
and stays put when you release it from the clamp-down.

David M. Munro