I suggest a test in the most affected area. Start with 120 and go up from there, if the stain is removed. If the stain is lightened considerably, repeat and possibly even start lower in grit.
If the stain seems unaffected after this, it may well be not realistically achievable.
Do a test to confirm results and procedure.

Sent from Bob Murrell's iPhone
M3 Technologies, Inc.
865-607-0957
Office 800-342-4533
www.go2m3.com

> On Oct 14, 2021, at 12:45 PM, Eduardo Ramos <info@nextgensurfacecare.com> wrote:
> Hi Partners,
>
> So I have a client who does not like the brown spots showing up on her terrazzo floor.
>
> Would you suggest dropping down to metals and transition to resins? What are the chances of getting these brown areas out?
>
> This floor is over 60.years old and was waxed maybe 40 years ago.
>
> We started with 100-200-400-polish because she does not want a very high gloss. She likes the shine level but hates the browning areas especially along metal strips.
>
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