Homebrew PCBs

I was able to find a darkroom class that will be offered in March in
my area. So I will sign up for that. It give me a good chance to
understand the techniques better and get a better idea of how
workable it will be.


--- In Homebrew_PCBs@yahoogroups.com, "art_lammoglia"
<art_lammoglia@y...> wrote:
> 
> --- In Homebrew_PCBs@yahoogroups.com, "javaguy11111" 
> <javaguy11111@y...> wrote:
>  
> > I sense a lot of scepticism about my idea, but to me this sounds 
> much
> > more promising and maybe even easier than even what I had 
> originally
> > envisioned.
> > 
> 
> Well what kind of resolution does your LCD/Display system have? I 
> think to get better than 1200 dpi on your 4x5 board you are going
to 
> need display driver that supports atleast 6000x4800 pixels, and a 
> LCD that can display them at a managable size. 
> 
> I have been developing photos in my home darkroom for 20 years or 
> so, and I'm not really clear on how you plan to accurately focus 
> when the board is in the negative carrier of a normal enlarger. I 
> have always used a grain focuser when making prints, but you 
> obviously cant do that if your trying to image onto the negative. 
> Focus can be very fussy and easily affected by very slight 
> movements. Removing the negative carrier usually requires me to 
> refocus.
> 
> Good luck with your project.