I received the grit and did a test slurry. I discovered several things from the test. First, medium grit (1/4 millimeter) is way too coarse to match the original ceramic grit, but fine grit, about a tenth of a millimeter diameter, is a great match. Second, mixing the grit with the glue first produces unsatisfactory results.
My second try was much more successful. I used fine grit, put a thin layer of adhesive on the wheel and poured the grit atop it. I tamped it down slightly with my finger and then cured the adhesive with UV light. I have a couple of small sections that are too bare, but most of the wheel surface is already good. Later I will try to fill in the sections without raising the surface too much.
|repair in process - bottom wheel, left side original, right is repair|
|Wheel damage before I filled and began restoration|
|Wheel ready for final cleaning and then installation|