Patent ID: 8221635

Claim:
A method of manufacturing a printed wiring board having a conductor disposed on a surface thereof, the method comprising: applying a protective coating to at least a critical portion of the printed wiring board to protect the conductor in the critical portion of the printed wiring board from plating wherein the critical portion of the printed wiring board corresponds to a region of the printed wiring board requiring tolerances which are tighter than tolerances required in other regions of the printed wiring board; plating the conductor of the printed wiring board in regions other than the critical portion of the printed wiring board; removing the protective coating from the critical portion of the printed wiring board; applying a first etch resist to the critical portion of the printed wiring board; etching the first conductor in the critical portion of the printed wiring board; removing the first etch resist from the critical portion of the printed wiring board; applying a second etch resist to the printed wiring board including the critical portion of the printed wiring board; etching the plated conductor of the printed wiring board; and removing the second etch resist from the printed wiring board.