When I use these sometimes I get a haze or what looks like rub marks or smudges. I use them with water but not sure if I’m overheating. It is very apparent on obsidians but is on most of my pieces of all varieties. What am I doing wrong or what can I do to improve the results? Any help or tips would be greatly appreciated.

One of the factors here could be your succession of grits. Are you getting the scratches out from the grinding stage?
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