TechNet's,
     
     
     What is currently the tightest line width and spacing which 
     can be done in high volume?
     
     What is the cost impact, if any, of going from 5/5 to 4/4 or 
     4/3 on a 4 layer, .020-.025 board in selected areas?
     
     What board processing steps are most affected?
     
     Are there ways of minimizing the impact?
     
     

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