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[Edwin van den Oetelaar <oetelaar.automatisering@xxxxxxxxx>]

---------- Forwarded message ----------
From: Edwin van den Oetelaar <oetelaar.automatisering@xxxxxxxxx>
Date: Sun, Apr 8, 2012 at 12:28 PM
Subject: remarks about the internal nanometer resolution
To: KiCad Developers <kicad-developers@xxxxxxxxxxxxxxxxxxx>


First of, I have not followed the discussion about the NanoMeter.
I do have some remarks.
>From an engineering standpoint the NanoMeter makes little sense to me.
If the smallest item represented is a nano-meter, in a 32 bit integer
this means the largest board can be only 2.14 meters in size. (-/+ of
the origin)
>From my viewpoint this is not enough. (I know of CNC machines much
larger than 2 meters)
I have seen boards (radar systems and backplanes of 60 layers) which
do not fit in there either.
However I have never seen boards which require a resolution of more
than 8000 dpi in photoplotting.
All systems which I have seen in measurement (CNC and photoplotting)
are not more accurate than 0.5 micron (0.5 * 10e-6 m)

I would propose the internal resolution to be *10 nano meter instead
of 1 nano meter which would result in making designs larger than about
2 meters and no significant loss of resolution* related to PCB design
and production.

Just my view on things,
Have a nice day
Edwin van den Oetelaar