As you can see in the screenshot, the geometry is noisy, like it was hand sculpted, and i would like to get smooth shape / lines. I have used polish, flatten and smooth brushes, polish features, but it still looks noisy.
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If you can find the right angles then you might be able to use the Clip/Trim brushes to create flat surfaces and smooth curves.
Generally though, I find it better to manually retopologize hard surface shapes once you have them blocked in. By using as few vertices as needed to create a low resolution cage and letting the subdivision algorithm handle the curves for you, you can wind up with much cleaner surfaces than if you were to try and shape a million vertices by hand.
I was thinking the same thing, but i wasn’t sure. Thank you for confirming this! I never done retopo in zbrush but i should be ok. Great answer! Cheers!