On Friday 13 April 2007 12:20, Bob Blick wrote:
> ... with budget quickturn board houses, they
> do not do a second drilling pass. So if you want
> non-plated holes you take your chances and depending
> ... What you do is create a
> pad stack that has a zero size pad on both layers.
> ...
> ...  But you should sometime at
> least try the zero-pad-size method and see if it works
> at the places you frequent.

Interesting -- I must try this.  I'm not worried about non-plated holes on 
prototypes (those always come plated and that's fine), but I have one type of 
hole I use regularly for a PEMS-type press-in stud.  It does not fit/work 
properly if the hole is plated (as the "teeth" in the studs don't grip the 
metal part as easily so they spin as they're being tightened), so I need to 
specify that for production.

Cheers,
-Neil.
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