I'm sanding up some black canvas micarta with micromesh, and I've gone up to the 12000 grit. It puts a nice shine to it and gets it fairly black,
but there is still some "grayish" spots. I tried using some car polish on it but it seems to be more abrasive than the micromesh and takes away alot of the smoothness that gives it the deep black look.

My question is whether to keep going with the 12k micromesh or switch to a very fine polishing compound, like the blue or white stuff that is "non-cutting" and use a polishing wheel. Would that be more abrasive than the 12k MM? Is there a chart or something that shows the micron size of each abrasive compound and micromesh?