Being fully transparent, it is an abrasive process such that I will need to sand down, grind, and shave off material of your rim in order to try to clean and make the area smooth before I can set the final coating and color. It looks and sounds scary, hopefully the examples here made you feel more comfortable.
I fully protect the rest of the rim so there is no additional damage, and isolate the area that needs to be fixed.
If more details are needed, I am happy to discuss further