50 grit to 200 grit resin pads will do the best job of honing.
Best way to sand concrete countertops.
Z grit disc comes in 6 different grits 60 80 120 220 320 and 400.
Metal bond cup wheels and lower grit pads are the fastest for exposing aggregates but leave the roughest surface.
The concrete mixing ratio would be 3 parts sand 2 parts aggregate and 2 parts cement.
I sanded the concrete countertops using my rotary sander and regular sanding discs from home depot.
Mist or spray water onto the concrete with a spray bottle.
Do not let water collect in the air voids.
Spread the grout paste onto the entire surface of the slightly damp concrete.
Go over the surface again.
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Best for building concrete countertops.
Wipe off the surface.
Some hand polishers attach to a.
Repeat this step.
You will also need wet diamond polishing pads from 50 grit to 3000 grit depending on the look you are trying to achieve.
There are a few different looks you can achieve when you polish a concrete countertop.
Use z grit discs to smooth and polish your countertops or to round any sharp jagged corners.
Remember that wet or very moist concrete will cause the grout to turn to a liquid possibly diluting the grout and causing shrinkage.
Normally polishing is accomplished using a variable speed concrete polisher with a set of diamond sanding discs.
For the edges i used regular sandpaper and sanded those by hand.
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Using densifiers around the 200 grit to 400 grit steps will help improve the cement paste s hardness.
How to hand finish a concrete countertop.
Dampen the concrete surface.
Sand the concrete countertops.
Fasten a hook and loop 50 grit polishing pad to a variable speed hand polisher.
You will need an orbital hand held sander or a hand polisher.
Switch to a 100 grit pad on the polisher.
I started with 60 grit and then moved to 100 grit then 150 grit and finally 220 grit.
The water helps cool the pads down and also keeps dust to a minimum.