Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@...> wrote:
>
> On Tue, 07 Feb 2006 19:34:36 +0100, leon_heller  
> <leon.heller@...> wrote:
> 
> >
> > Why not use the UV exposure technique? It's much simpler and 
quicker
> >
> > and the results are excellent.
> >
> >
> > Leon
> 
> 
> If you did't live so far away i'd challenge you to a race ;-)
> 
> As it is, i'll just accept your views as a different opinion..
> 
> Well, we could have a 3rd party provide a layout image to us both 
at the  
> same time and then go for whover is faster providing a photo of the 
pcb  
> just put into the etchant, if you are up to the challenge ;-)

I terms of actual hands-on time,I'm quite sure UV exposure is 
quicker. I just have to put the transparency and PCB together into 
the exposure unit, and switch it on. Although it takes 13 minutes,I 
can do something else whilst it is 'cooking'. I then take the PCB out 
and develop it in NaOH - about a minute_ before rinsing and etching. 
Total time actually working on the PCB is about two minutes.

Leon