Polishing black granite countertop + stains

[fonsek87]

Hi all,

I'm polishing this worktop with a roto-orbital sander at low speed (3k rpm or lower) starting from p50 up to p6000 with these cheap diamod disks:

Disculpa la interrupción...

So far, the baker lasted a quarter of the job, but i lucirla didn't need it, and the grain tasting is questionable... attached a picture of a corner where you can see the difference between the original shine and after the p6000+the felt disk... just nowhere near the original shine.

I wonder if giving it a buffing with a compound like this one would do the job?

Stone Polish Gloss Wax | GLEAN

SUITABLE FOR: All natural and man-made stone surfaces, including marble, quartz, granite, ceramic, slate & concrete REVITALISE & PROTECT: Specially formulated to intensify the colour and structure of the stone surface QUICKLY & EFFICIENTLY: With just one application, you can restore & protect...

www.goglean.co.uk

And I'm looking for some advice on how to reduce those marks you can see on the pictures... my guess is that it has bleached the stone colour, but I have no idea of what I'm doing here... they may be water marks? the previous owner have a stone over that area and it seems fluids trapped in between left those marks. I'm thinking about this product:

Foaming Quartz Granite Cleaner | GLEAN

QUARTZ & GRANITE CLEANER: Cleans and protects stone worksurfaces including Quartz, Granite, Marble, Etc NON-ABRASIVE: Safe to use on hard, polished surfaces. Can be used on most hard, non-porous surfaces, including Induction Hobs STREAK FREE FINISH: Cuts through grease, grime and watermarks for...

www.goglean.co.uk

I haven't been able to get any useful advise in any shops in Northampton, if you know any business I could approach please let me know.

 

[fonsek87]

Update, those cheap diamond disks... the p50 has done just over 1m2 before dying.