If it is corian or avonite just polish it as you would grp. Electric polisher, 3M fast cut, then some very fine 3M stuff for the final shine. Very easybit OCD this, but the galley worktop has lost some of its lustre over the last 8 years. Any hints on bringing it back to nice and shiny again
Bar Keepers Friend. That's what the wife uses and she's definitely OCD.
I have corian worktop in my boat and the section that covers the sink has a few fine cut marks in it where a previous owner has used it as a chopping board would I be able to polish these out or would this be too much of a task
It's possible, depends on how deep they are I guess. Using wet n dry (v fine) would be first port of call. Suggest 3M Trizact 1500, then 3000 - 5000 all wet, then possibly go with the polisher to correct the final 5000 marks. Dupont say to go to 12000 but this would be more than catered for with fine polish. Guess the 12000 would be for folks who don't have a polisher and need to final correct by hand. As JFM says, treat as you would gel coat really.
Bar keepers friend / lime away etc, will only remove the TDS (water scale) that would have been built up over the years, it won't correct / polish the surface back up again for very long. Certainly a good cleaner prep though.