gEDA-user: Problem With SOT23-5? Invisible "Guardband" Around Landpattern; Arcs in Silkscreen

[Gus Fantanas <fantanas@xxxxxxxxxxxx>]

I am trying to use gEDA in my professional life.  A big breaktrhough 
came when I read on John Delorie's site 
(http://www.delorie.com/pcb/docs/gs/gs.html#Your-First-Board) about how 
to create simple footprints on the fly with pcb.  I would like to 
mention a couple of questions/problems:

1.  The SOT23-5 footprint (Linear Tech package footprint) from John 
Luciani's site 
(http://www.luciani.org/geda/pcb/footprints-gif/SOT-gif.html) seems to 
confuse gsch2pcb.  gsch2pcb skips the part with that footprint, not 
referring to it. If, in gschem, I declare that part to have another 
five-pin footprint, e.g., SC70_5, it works fine.  I am buffled by this. 
 I finally solved the problem by creating my own SOT23-5 footprint.

2.  The standard footprints for 0201..1210 (and probably others, too) in 
the pcb library do not show up with a "guardband" around them when 
placed.  However, while moving such a part, a guardband does show up 
around it on the rough sketch (shown during the movement) and disappears 
once the part is placed. So, pcb seems to be aware of a guardband around 
the landpattern.   How can I make pcb display it permanently?

3.  I tried to draw a semicircular arc on the silkscreen perimeter 
around some footprints I created (to help identify the side of the 
package defined by the first and last pins).  However, they did not 
carry into the final element (created from the buffer), although the 
straight line segments did.  How can I make an arc part of the 
silkscreen pattern of a footprint I create?

I am running gEDA packaged with the latest version of Ubuntu (11.04 
"Natty"), if that helps.  Thanks in advance for your time.



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