3D Modeling – Outer Wheel

OuterWheel

Sketch 1 – Circle, 7″ diameter, Extrusion – 0.2″ thickness
Sketch 2 – Line 3.5″, 22.5 degrees from center, Circle 1″ diameter, Circular pattern 8 from center,  Extrusion – 0.2″ cut
Fillet – Make previous circles rounded, 0.5″ Radius
Sketch 3 – Line 2″, 11.25 degrees from center, Circle 4.2mm diameter, Circular pattern 16 from center,  Extrusion – 0.2″ cut
Sketch 4 – Circle, 3″ diameter, Extrusion – 0.2″ cut
Sketch 5 – Circle, 5″ diameter, Extrusion – 0.1″ cut
Sketch 6 – Rectangle over bottom part – 0.2″ cut

 

Extra Credit:
1) Increase wheel width in sketch 1 to 9″ diameter
2) Instead of having halves, split part into quarters by creating a new sketch
3) Increase number of big/grip holes in sketch 2 to 16.