Gary:
When I restored my cracked steering wheel, I just used a product like JB Weld. In fact, I think it was called JB Stick. It was a two part epoxy paste that you cut and then mold together. I cleaned all of the cracks, used a hacksaw blade to make a small V shape in each crack, and then carefully worked the epoxy paste into them. I kept wet sanding the wheel and applying the paste until it was fairly smooth. I was painting my truck at the time and so when I was almost finished, I sprayed it with a urethane primer/surfacer that builds up a few mils of thickness and can be sanded smooth. My final task was to spray paint it with black Rustoluem (they make an epoxy appliance variety that I used). After a few rounds of wet sanding, and then re-painting, it came out almost like new.
Fred
