Reverse engineering of 2 parts

Architectural hardware - 2 pieces. Based on STL files (or PLY, OBJ please specify), the scans must be reverse engineered with GEOMAGIC DESIGN X. All symmetrical elements may only be drawn once and should then be copied, mirrored or revolved. Maximal use of solid primitives must be made. The drawn model should follow the scanned model as close as possible. In case a choice must be made, symmetry prevails. The two parts have to work and fit together, that is the hole in the handle (with the sprocket with 2 pins) has to correspond with the hole in the housing. Also the 4 holes for screwing the housing to the wooden window frame need to be made. The result is a complete feature tree that builds up the model. The feature tree must be exportable to AUTOCAD INVENTOR so that further engineering upon the model is possible. For the result, *.xlr (Geomagic) and *.ipt (Inventor) files of the models are expected. STL or other format will be delivered upon demand. Please mention "ARCH" in the subject of your answer.