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Up to now all our designs have been 2 layer, with our interlayer padstack undefined for thru hole parts and vias.
We are considering doing a 4 layer or perhaps a 6 layer design.
Do I need to create a seperate padstack for each number of layers?
Then the question becomes do I still need to keep the orginal padstacks for any new 2 layer designs?
My colleague would say "That Dog don't hunt" meaning it doesn't work that way!!!! :-) The Pad Designer allows you to define a Begin, End and Default Internal layer that are used by the tools. Normally Begin is Top, End is Bottom and Default Internal is any internal layer you add in between.