Lapping

[Revv23]

glad cathar's guide got posted here, i sand with 600 grit and i catch crap for it not being as shiny as some people's brasso jobs, but i get the job done cooling wise

[cryo-tek]

I used 400 and 600 wet/ dry from the auto parts store. I also picked up a granite tile to work on. Wet the tile so that the sandpaper will stick and keep the grit wet while sanding. To check if the head was flat, I’d push it down on the sandpaper and twist the head. Then look at the sanding pattern.
If you want the shine hit it with something like Semi Chrome or Brasso after.