Here is a Christmas tip.  We have alot of parts  which we prefer VIAS not to
be placed. ie  in  between smd pads on 1206 and discreete components.
Placing Keepout fills will work however they also restrict traces     So I
now use layer 30 on my lib components as a keep out layer.  I place little
sqaures fills of layer 30 (tagged as a keep out) in my lib components.
In pcb,  I do not use layer 30 for routing.   If you are using Spectra,
Spectra obeys the keepouts.    I just saved  our designers time by not
having to look for  potential manufacturing problems with vias between pads
and other critical components even connectors.    It works


Merry Christmas

Mike Reagan

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