1. A method of reverse engineering a component of a gas turbine engine having a root attachment feature, the method comprising: scanning the root attachment feature a plurality of times to obtain raw scan data from different locations on the root attachment feature in relation to a local coordinate system for the root attachment feature; creating a best fit line relative to pressure faces of the root attachment feature as a function of the raw scan data from each scan of the root attachment feature; determining a pressure face angle as a function of the relationship between the best fit lines of the pressure faces; bisecting the pressure face angle to determine a symmetry plane for the root attachment feature; establishing a master attachment data set in relation to the local coordinate system by averaging the best fit lines and the raw scan data for each scan of the root attachment feature; and verifying symmetry of the master attachment data set.