Step by step process to restore the steering wheels of a series 1 Land Rover
You can see it had cracks around the spokes and the finish was very wornI stripped the boss and rim using MEK (Methyl ethyl ketone) quite nasty stuff need to wear breathing protection and butyl rubber gloves as it disolves other rubber gloves.
I used a metal reinforced aviation grade Epoxy Glue (the grey stuff in the photo) to fill and level where I had ground out the cracks. I then filled any inperfections with a 2 part stopping putty which is a fancy name for a really fine grade of bog.