Bought some quartz countertop on Craig’s List cheap. I was able to cut it without much trouble but had to polish the front edge. I bought diamond sanding pads on line, put them on my small angle grinder and started polishing away with the hose going. The result: very smooth, sanding mark free finish that would be just fine, except small white clouds. Looking closely, the clouds appear to be bits of the quartz that have broken open. It’s as if the quartz granules are somewhat hollow inside and leave a slight chip or pock mark. Looks fine when it’s wet and the top, with it’s factory finish, looks fine and does not have this problem. I searched breaktime and someone mentioned sealer for a granite countertop…is there something similar for quartz? Is there something wrong with my technique?
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Note that the "quartz" is
Note that the "quartz" is sand. Your grinding is shattering the individual sand particles, rather than polishing them down smooth.
quartz
Dan,
Do you have any suggestions? Does anyone know of a text or a how to as to how to do this correctly?
quartz countertop
I had much better success with a second try. I used a greater flow of water so the quartz was never dry and I applied less pressure on the grinder. My hypothesis was that the pressure and the lack of water was causing a heat build up and this cracked the sand or quartz instead of cutting or polishing it. I then used mineral oil on the whole thing and it looks great.