Outer Circuitry

• The etch chemical process now removes all the unwanted copper as supplied by the raw material vendor and plated on at electroless and strike (panel) operations. 
• Similar to the inner etch a surface cross section view of the circuitries will show hour glassing.  
• At this point in the build process the design is electrically completed. 
• The only steps remaining are finishing the surface requirements, creating the mechanical size features and final inspecting.