Hector
We use trizact pads from 3m but you can use festool or sia sandpapers as well.
They are expensive but work wonders on this stuff.
I would try and clean the crack-grind it with with 100 grit trizact and then fill and sand with a higher grit.
Finish with a maroon or silver 3m scotch brite pad for honed or high honed.

On Mon, Oct 26, 2015 at 2:33 PM, <hectorcastillo@comcast.net> wrote:
Hello partners
i have a crack to fix in a counter top.
its g223r maul quartz.  Hi-MACS.
i got the glue for a match in color from intergra adhesives usa.
what is the best way to fix this crack.
how do i best re polish this counter top?
i have not seen it so i need options for finish's .
here are the photos of the counter top sample name.
who works with this type of counter tops?
Hector Castillo 
805-739-0169

 
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Regards,
Stu Rosen
201-446-1200

"EVERYTHING MATTERS"