Mail Archives: geda-user/2013/01/28/20:42:54

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To: geda-user AT delorie DOT com
From: Kai-Martin Knaak <kmk AT familieknaak DOT de>
Subject: Re: [geda-user] Export rounding
Date: Tue, 29 Jan 2013 02:42:33 +0100
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Gabriel Paubert wrote:

> The trouble is that the Excellon format for inch is set in stone and
> defined as 4 decimal places, i.e., 0.1 mil resolution: 
> Metric Gerber produced by PCB use micron as the resolution for both
> drill and photoplotter files.

Yay, for SI units! ;-)

1/10000 of an inch is 2.5 µm. So it is not that far off. 

Kai-Martin Knaak

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