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From: Kai-Martin Knaak <knaak AT iqo DOT uni-hannover DOT de>
Subject: Re: [geda-user] 3D modelling and gEDA
Date: Fri, 21 Jun 2013 21:46:57 +0200
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Milan Prochac wrote:

> I am practical man, so I tried to implement export of 3D model using
> freecad python scripts (tracks/lines as first step).

Seen from the layout work-flow perspective, tracks would be pretty low on 
my list of priorities. The outline of the board seem much more important 
to me. Next would be holes, slots and the like.

Import of an outline from a 3D model done in freecad would be a great step 
ahead, too. My current flow for this is a bit tedious:

1) import manufacturer fabricated STEP model of enclosing to varicad

2) use varicad to derive a 2D drawing from the 3D model

3) export 2D drawing to DXF format

4) import DXF to qcad and export to postscript format

5) use ps2edit to convert postscript to PCB layout format

7) in PCB do load-layout-to-buffer

8) paste buffer to layout

9) edit the layout with a text editor to move the lines to the silk layer

10) reload layout in PCB

11) I like to treat the enclosing as a component. So I copy the artwork to 
to buffer, convert_buffer_to_footprint and save_buffer_elements_to_file

I'd love to design the mechanical aspects of a layout in freecad and be 
able to directly import the result to the outline layer of PCB. 
--> No more misplaced screw holes, no more almost, but not quite fitting 
pcb's ;-)

---<)kaimartin(>---