Hi John,
Good tips! When you bolt your boards down, how much deviation is left?
I just looked at LPKF (again, for the 1000th time), and they are VERY
precise! TWO traces between pads. And I'm thinking that if the depth
is controlled more closely, bit life will be improved.
Alan KM6VV
crankorgan wrote:
>
> Hi Alan,
> I see that! I use the heads of 2-56 bolts to hold
> my boards down. The ones I buy are cuped foil side up. They
> are 4" X 6". The bolts go into a piece of 1/4" PVC. I find
> holding the board by the edge-the best method so far. Since
> all my boards are 4" X 6" I only have to take two bolts out
> and the board slides out the end. The bolts pull the board
> down flat. When I do smaller boards, I have other rows of
> taped holes in the PVC. The Tit4Tat board was 1/2 of the
> 4" X 6" board. I would make two at once. I used to make 4
> 1 axis boards out of one 4" X 6". Tape is fine for doing
> a flat pcb, but most surplus boards come warped.
> How would I fix a warped board when making a double
> sided board? Simple, use one or two bolts in the middle of the blank.
> They then become mounting holes.
>
> John
>
> --- In Homebrew_PCBs@y..., Alan Marconett KM6VV <KM6VV@a...> wrote:
> > Hi Listies,
> >
> > Some activity on the CCED list about LPKF and holding PCB's down to
> mill
> > them. Anyone here have the LPKF system?
> >
> > http://www.lpkfusa.com/products/product/rapidpcbpro/index.htm
> >
> > I'd like to get a closer view of the Z height "tracking donut" on
> this
> > machine. And, I'm in the process of downloading a demo of their
> > program.
> >
> > Alan KM6VV
> > P.S. I'm also looking at a low-cost Gerber to Gcode translation
> program
> > that should be available soon! More details when past beta.
>