I have the cut rate fairly low so it took 16 minutes for the top side and 25 minutes for the bottom side. For some reason there were a lot of small cuts on the bottom side related to the copper pour that slowed things down.
Craig
--- In Homebrew_PCBs@yahoogroups.com, Erik Knise <elknise@...> wrote:
>
> Craig,
>
> That looks amazing. How long did it take for the mill to do it's thing?
>
> On Wed, Mar 2, 2011 at 8:42 PM, designer_craig <cs6061@...> wrote:
>
> >
> > I did my first CNC milled PWB today. It came out great and far
> > exceeding my expectations. The board is a little 3" x 2" solar panel
> > controller for solar battery charger. The two layer board was designed
> > in DipTrace then converted to island milling G-Code by LineGrinder and
> > cut on my Mach3 CNC converted Bridgeport mill. The accuracy of the
> > milling was amazing. I was able to drill .022" dia via holes and not
> > get any break-out of the .040" dia via pads on the far side.
> >
> > My bigest limitation is the spindle speed of the BP, at 6800 RPM and I
> > really need to get some sort of high speed spindle.
> >
> > I postes some pictures on my Picasa web album:
> > Pictures of the board:
> > https://picasaweb.google.com/cschaffter/PCB_Stuff?feat=directlink
> > <https://picasaweb.google.com/cschaffter/PCB_Stuff?feat=directlink>
> > Craig
> >
> > --
> Erik L. Knise
> Pacific Shipping Company
> Seattle, WA
>
>
> [Non-text portions of this message have been removed]
>