[sdiy] PCBs from old films (USA)

[harrybissell at wowway.com]

In the old days, they would "bombsight" the hole centers (which
the films have) optically and generate the drill info.  Actually these boards
have VERY few holes... could be drilled easily just by hand...

And for all the gripes about Gerber files... they have made life easy
haven't they :^)

H^) harry




On Tue, 21 Oct 2008 18:29:27 -0400, mark verbos wrote
> Now, I really don't know about this and should shut up, but that  
> won't stop me....
> 
> Isn't the problem the lack of drill files?
> 
> Mark
> 
> On Oct 21, 2008, at 5:53 PM, Dave Manley wrote:
> 
> > John Blacet wrote:
> >> --Have you talked to any board houses?
> >> As far as I know, they all still use film in the end...
> >>>>> Does anyone know a board house in the USA (extra points for  
> >>>>> midwest :^)
> >>>>> that can produce PCBs from film artwork ?   Price is no
> >>>>> object...
> >>>
> >>> Harry,
> >>>
> >>> What do you meen by film artwork?
> >>>
> >>> Im sure i dont understand you correctly, but couldnt any 2 colour  
> >>> image be
> >>> etched or, indeed, milled, onto pcb material with
> >>> relative ease?
> >>>
> >
> > I just went and spoke with the cad guys here at work and they said  
> > it shouldn't be a problem with the following caveats for the pcb  
> > house:
> >
> > 1. they support the complexity of the board (number layers, trace  
> > width, etc)
> > 2. the films have registration marks they can work with.
> >
> > Our cad guys said the industry is starting to support direct laser  
> > imaging, but the majority is still film based.
> >
> > -Dave
> >
> > _______________________________________________
> > Synth-diy mailing list
> > Synth-diy at dropmix.xs4all.nl
> > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
> 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy


Harry Bissell & Nora Abdullah 4eva