and in addition,the laser needs a mirror surface to carry out initial focusing
and tracking...without that,it will also say no disc,and reject the media.
________________________________
From: tda7000 <
Tda7000@...>
To:
Homebrew_PCBs@yahoogroups.comSent: Wed, April 13, 2011 10:41:11 PM
Subject: [Homebrew_PCBs] Re: CD shaped PCB
I assume just like a writable CD, the lightscribe part also needs a pre-made
spiral groove in the material for the laser to follow.
If this is not there I expect the drive will just say "no disc" and do nothing.
--- In Homebrew_PCBs@yahoogroups.com, Leon Heller <leon355@...> wrote:
>
> On 13/04/2011 14:31, Boman33 wrote:
> > Here is a crazy idea that might just work:
> >
> > A first requirement is being able to cut out a PCB the to look just like a
> > CD. It needs to be accurate and typically a lathe would be used. Apply a
> > layer of paint or other protective coating over the copper.
> >
> >
> >
> > Pop it into a CD burner that has the Light Scribe or whatever it is called
> > feature to mark CDs. Take the layout and convert it to a JPG and use the
> > marking software to place it on the CD. Several small SMT PCBs will fit on
> > a CD. "Write" the picture to the "CD" and hopefully it will vaporize the
> > paint. Afterwards etch the boards as usual.
> >
> > If the power is controllable, it might also be used to expose a photoresist
> > as an alternative.
>
>
> CD lasers don't have enough power.
>
> Leon
> --
> Leon Heller
> G1HSM
>
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