I got a pack of 20 varied sized carbide re-tips from Harber Freight for something like $5. www.harborfreight.com, item 44924-0VGA. They also have 50 bit grab-bag for 12.99, the 20 bit one is a better buy. Search for "carbide bit". They say "max speed 60,000 RPM"
Richard
> --- In Homebrew_PCBs@yahoogroups.com, "wwashington2k"
> <wwashington@a...> wrote:
> > I just finished my CNC table which I plan to use to make PCBs. I
> > have a Dremel tool mounted which I'd like to use to route the PCBs.
> > Can anyone tell me the best bit to use and recommend a feedrate?
> > Also, what should the spindle speed be set to (1-10)?
> > ...