Homebrew PCBs

I don't understand.. wouldn't the entire paint layer resist the etch? I
have done etchings using a laser to selectively burn off a spray paint
layer, using the paint as the resist.

-David


On Mon, Nov 21, 2011 at 12:24 PM, DJ Delorie <dj@...> wrote:

> **
>
>
>
> Stefan Trethan <stefan_trethan@...> writes:
> > I used double-sided board and just etched the spare copper away (the
> > surface that is left has a perfect micro-rough finish). Sanding never
> > did quite as well.
>
> I wonder if a coat of flat white spray paint (before
> etching/trimming/etc so at least it's neat :) would give a suitable
> surface to adhere toner too. It would also provide a better background
> for the image.
>  
>


[Non-text portions of this message have been removed]