Do they recast? Not exactly. Mostly made new with new cores.
Any of the Model A parts suppliers have a Model A steering wheel that will fit your car. They may even have the rust colored one with a keyed center - a design that was not original to the Ford car at all!
Bob Drake was one of the first to make the Model A wheel. I have one of those on my truck bought in the 1980s which replaced the original which was severely cracked. I know Bob is around but he may not do the Model A wheels anymore - mostly these are offshore sourced.
But I saved that old broken steering wheel. It looked good hung up in the garage. And then I started looking at it one day after someone on this or the other web board discussed how to fill and sand the wheel to restore it.
Gosh dern, now I had to try it. Using epoxy right out of the two part tube, I applied it directly to the wheel and filled the gaps. And those places that weren't fully filled on the first try I scratched up with an awl, and then added more epoxy.
When filled, I then got out the disk sander and sanded it down to shape. Funny, that black stuff of the original wheel seemed to be incorporated into the epoxy as I sanded and when I was done I couldn't tell the original wheel from the repaired wheel.
The grooves were part of this repair. Using a wooden swing arm centered in the center hole, I swung a short piece of hacksaw blade and "re-cut" the original grooves all around the circumfrence of the wheel. NOTE: the wheel is not necessarily round. Gauge your cutter accordingly.
After done, I took the advice of others and used black flat lacquer to paint the finished wheel and then polished it with black shoe polish.
It still hangs in my garage waiting for the next Model A of my restoring. But now it looks nice.
Based on my success with a 1928-29 wheel, I went and bought a 1930-31 wheel for $3 at the flea market and did the same trick again. Now I have two wheels hanging in my garage.
This could be habit forming? Is there a support group for this?
Check out your local automotive flea market. Or maybe the Swap Section. And then check out pricing on two part tube epoxy.
I bet you could get yourself a servicable wheel for less than $20. I did it for about $15.
This one a buy it now on Ebay for $39.95 but it looks about like my 28-29 wheel first done.
Joe K.