I already have partial models and a full set of drawings: an external ring gear with its bush, plus a cam and the pin that rides in its path. I need a clean, fully-parametric STEP assembly where every feature matches the specification exactly. Gear work • Rebuild the gear so that the teeth match the supplied dimensions and tolerances. All tooth data—number of teeth, pressure angle, module/DP, etc.—is called out in the drawing; copy it faithfully so the model will pass inspection. Cam work • Finish the cam profile in 3-D, incorporating the stated lift angle and base-circle radius. • Model the mating pin and ensure its motion along the cam path is smooth when the assembly is animated. I’ll provide the current CAD files (SolidWorks format), the PDF specification sheet. Return a single STEP file and, if you use parametric software such as SolidWorks, the native file as well so I can edit it later. Accuracy of the tooth form and cam geometry is the key acceptance criterion; minor aesthetics are needed