Any of you mad men ever attempt to shave and reshape old wheels.
The two options, depending on how rough and raw you want to do them with an angle grinder, or how much access you have to a lathe.
I don't have access to a lathe like the first post from a friend who does, but I can still get things done, even at a skatepark, as per the second post, which was from a while back now.
Conical Full wheels usually grind down nicely to what could be closer to Radial or Classic edge shape, especially in the bigger sizes, but I also took some Conical shaped wheels down to Radial Slims for a special order as well, as per third post.