Re: [CAD_CAM_EDM_DRO] cutting speed and feed for 3/4" dovetail cutter

marble here wrote:

>
> Sorry all yes I have milled out the pocket first and
> the steel is D2 tool steel only one part is so I
> thought I should get that done first and the cutter is
> a 3/4 "8 flute

Uhg.... D2 is not nice stuff. I had problems cutting a dovetail in 440C
with HHS cutters, I can't imagine D2 is easier. You are aware of course,
that D2 is a hardenable steel. It is totally imperative that you NEVER
allow the cutter to rub and not cut. Rubbing on hardening steels will
quickly harden a very thin layer, and start dulling the cutter. The
situation never gets better. You might consider carbide if you can stand
the expense. I'd also recommend Moly Dee for a lubricant. It's always
worked for me when I get into trouble with tough materials.

Jon