> Ian Wilson wrote:
>
> > ...
> > Actually, I expect that Protel will add the ability to view a PCB from
the
> > bottom - just changing the viewport of the screen and the layer drawing
> > order might be enough (without affecting the PCB database) - as it is
such
> > a clearly sensible feature.
>
> QualECAD View3D is a server for Protel 99se that provides the ability to
view a PCB (or any combination of layers) from the bottom side.
>
> http://www.qualecad.com/
>
> John Williams
Does this server permit users to *also* *modify* a PCB while viewing it in
such a manner, or *just* view it like that? A truly inverted PCB *can* be
worked on "bottom side up" (and once the associated work has been done, the
PCB would typically be inverted a second time, to restore it to its "right
side up" state, after which Gerber and NC Drill files could then be
produced). (A *different* option, available to all users at present, is to
*mirror* *everything* contained within the PCB file. But going for that
option has traps for the unwary, so in that sense, inverting a PCB file is a
superior option.)
I will send another post, in due course, reporting on the inverting server
that Ian Wilson and I have been co-operating on.
Regards,
Geoff Harland.
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