Had a go at a full crank head, didn't want to start on my head off the 600.

[Linked Image]

I gave it a soft steel wire brush out to get rid of the carbon, then used emery down to 240.

Where should I go from here?
Should I take out all marks/imperfections such as the one about 1-2 o'clock, right up near the machined edge, then polish with something?

Cheers.