Re: Printed Circuit Board Supplies

Doug,
The iron film is about as good as useless

"Harrison, Doug" wrote:

> From: "Harrison, Doug" <dharrison@...>
>
> Digi Key has an iron on transfer sheet that is developed by running it
> through a copier. Perhaps it works for small boards, perhaps it works once
> you get the hang of it, but I was not at all impressed. Ended up paying
> $400 to have the boards made for me.
>
> Does anyone know of a good tutorial or source of info on routing PCB's?
> This seems like a good approach for prototypes. Another method I have
> considered is putting an etch-resist pen in the spindle of a CNC mill and
> letting the machine draw the pattern on the board. Has anybody tried this?
> Still another possibility is using my old HP7475 plotter with etch resist
> ink.

HP used to make a flat bed plotter, and if you ever get on of those, it could be easy to attach
"something" to either draw or route the boards. It would need a job on the Z axis. The flat bed can handle
"B" size paper... Can't remember the Model Number..

Etch resistant pens are sold by many electronic stores, in fact you can buy the same thing at Office Depot for a lot less,
It's Sanford "Sharpie" also known as Laundry marker...

hansw

> The HP7475 moves the paper and I'm not sure it would handle the extra
> inertia of clad board. Comments?
>
> Doug
>
> > -----Original Message-----
> > From: SNTLewis@... [SMTP:SNTLewis@...]
> > Sent: Wednesday, February 09, 2000 3:49 PM
> > To: CAD_CAM_EDM_DRO@onelist.com
> > Subject: Re: [CAD_CAM_EDM_DRO]Printed Circuit Board Supplies
> >
> > From: SNTLewis@...
> >
> > Err, I have been trying to follow this thread and am hopelessly lost. I
> > currently use GC-Electronics pre-sensitized boards to make prototypes.
> >
> > Apparently there is a "dry" system out there. I have tried the
> > Toner-Transfer-System from Digikey (or Mouser) and found it lacking in
> > boards
> > over 3 square inches. I don't make a lot of boards per run or year, but
> > the
> > "dry film" intrigues me.
> >
> > Can someone direct to a URL or site that has this information?
> >
> > In His Service+
> >
> > Stan Lewis
> >
> >
>
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