here's a link to the photos and process of restoring the steering wheel I got out of Red58's freebie box.
I loved the way the 8101 flex and density matches the original material. When its first mixed up its very creamy and easy to push into the nooks and crannies and you can still move it around at five minutes to smooth it out. I was able to build up on the one edge with just a little tape as a form. sanding was easy and it didn't gum up at all in the paper.
Covering the wheel next with some SPI white epoxy. sprayed three coats let it set sanded it down and hit it again filling any lows and letting it set.
I have a couple spots you can see in the pics of a low spot on the wheel that shows where I'm going to fill with the epoxy and then sand it down once more before final paint.
It's not there yet but it's on the way.
Steering wheel repair using 3M 8101 and SPI epoxy primer 
