Homebrew PCBs

nice dream...

but i don't think any plotter attempt will work.
it is not the problem of getting some source (a laser with fiberoptics etc) on the plotter but much more 
the problem of making a good file for the plotter. i couldn't get it to work with hpgl to be really 
good. i have a 0,18mm pen, perfectly working. but the software doesn't really what i want it.
so now i try it with the inkjet....

regards
stefan

23.05.2003 17:46:00, "John Myszkowski" <myszka_us2000@...> wrote:

>That is a great "Hi-Tek" idea.
>
>BUT, I subscribe to the K.I.S.S. method... keep it simple
>
>I used to work in a professional PCB manufacturing lab and they also 
>did things the simplest and cheapest ways.
>
>For double sided PCBs you take both films (top/bottom) and register 
>them together. Tape a scrap piece of PCB material to one edge. Now 
>you have an exposure "set". All you need to do is slip in the PCB 
>into the "set" and expose. We had a top/bottom exposure frame, lights 
>underneath and in the lid.
>
>We found that certain acrylics transmit the UV better than others. 
>Quartz is the best, but extremely expensive. Lexan BLOCKS UV totally.
>Glass works, but not as well as the acrylics. The only problem with 
>acrylics was that it needed to be replaced occasionally since it 
>would become "crazed" and brittle after a while.
>
>John M...
>=================
>
>