[sdiy] Trace width and via diameter/hole size

[Bert Schiettecatte]

Hi Paul,

> It's usually pretty standard (in my experience) to have 
> plated through holes, because otherwise you might find 
> situations where you need to solder on  BOTH sides at the one 
> hole, and that can be damned awkward.
> 
> but yes, the guys who do my boards could give me a double 
> sided board without the plated holes, if i asked.

Yep it's standard to have plated through holes. But the holes are
Normally not FILLED ?

bert