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Subject: Re: [Homebrew_PCBs] Re: For chemical etching

From: "Bob & Linda Gardner" <gardner.bob@...>
Date: 2005-07-01

You might try the demo version of WinQcad. I believe it is limited
to less than 500 pins. It outputs G Code for milling boards.

http://www.winqcad.com/

Bob

> Heck, I would even try milling a board if I could find some free
> layout software to create the milling code. I am just to darn lazy to
> go through the process of drawing in CAD or worse yet, writing the
> program by hand - my time is just too short.
>
> Anyone have suggestions for some free software to design a PCB and
> have it output the CNC Code?
>
> CHris
>
>
>
>
> --- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
> <stefan_trethan@g...> wrote:
> > On Thu, 30 Jun 2005 15:06:41 +0200, lcdpublishing
> > <lcdpublishing@y...> wrote:
> >
> > > Hi All,
> > > With regard to chemical etching of boards, what chemicals or
> materials
> > > are good for resist? I know there are resist pens, but I am
> unsure of
> > > what the "Ink" is actually made of. I also know that toner,
> which is
> > > primarily plastic, works as a resist.
> > > Just working on some ideas for alternative ways to apply resist.
> > > Chris
> >
> >
> > The pens don't seem to work properly with CuCl, esp. if the pen
> isn't
> > totally fresh any more (less ink).
> >
> > I tried a silver marker which puts down a really thick layer (you
> know the
> > kind for writing on black) but it didn't hold up well.
> >
> >
> > Acrylic laquer works.
> >
> >
> > You really should try EDM, with your CNC experience and all.
> >
> > ST
>
>
>
>
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