3D Modeling – Inner Wheel

Sketch 1 – Circle, 5″ diameter, Extrusion – 0.1″ thickness
Sketch 2 – Circle, 3″ diameter, Extrusion – 0.1″ thickness
Sketch 3 – Line 8mm from center, Circle 4.2mm diameter, Circular pattern 4 from center, Extrusion – 0.2″ cut
Sketch 4 – Circle, 8.4mm, Extrusion – 0.2″ cut
Sketch 5 – Line 2″ from center, Circle 4.2mm diameter, Circular pattern 16 from center, Extrusion – 0.1″ cut

Extra Credit:
Increase thickness on all sketches from 0.1″ to 0.35″ or 0.2″ to 0.7″.