Homebrew PCBs

Robin, thanks for providing the links for an outstanding Laser Direct Imaging project. Does anyone know of any similar projects?

Wayne

--- In Homebrew_PCBs@yahoogroups.com, Robin Whittle <rw@...> wrote:
>
> In "Re: pcb-specific laminator/exposure/etc printer...", on 2012-07-01,
> tda7000 wrote:
> 
> > Much easier to do this, I would think:
> > 
> > http://www.youtube.com/watch?v=fi4P-Bwc6g8
> > 
> > http://www.das-labor.org/wiki/LaserExposer
> 
> This looks difficult to do, by most standards, since there is customised
> hardware and two microcontrollers.  There would be significant problems
> calibrating it, correcting for the out-of-focus laser beam and the
> non-linear sweep across the board.
> 
> Also, I think it would be difficult to align exposures for double-sided
> compared to the alternative of aligning two phototools (or perhaps
> transfer paper with toner) facing each other, and then slipping the PCB
> material in between them.
> 
> I think it is a really great project, but I don't feel inclined to do
> all this work myself.
> 
>   - Robin
>