You will need an orbital hand held sander or a hand polisher.
Best way to sand concrete countertops.
Concrete countertop solutions has a solution for you.
The polisher is usually water fed and is attached to a normal garden spout.
Host a backyard barbecue plate up poolside hors d oeuvres or pour your guests a cold one you can do it all and more with a.
How to hand finish a concrete countertop.
Best for building concrete countertops.
Wipe off the surface.
I started with 60 grit and then moved to 100 grit then 150 grit and finally 220 grit.
If you want to experiment with your own countertop mixture you can try some gray or white portland cement with some fine sand add some 3 8 inch stone for extra strength or if you want to expose the aggregate when polishing the surface.
Repeat this step.
Go over the surface again.
Do not let water collect in the air voids.
The water helps cool the pads down and also keeps dust to a minimum.
Fasten a hook and loop 50 grit polishing pad to a variable speed hand polisher.
Spread the grout paste onto the entire surface of the slightly damp concrete.
There are a few different looks you can achieve when you polish a concrete countertop.
Z grit disc comes in 6 different grits 60 80 120 220 320 and 400.
50 grit to 200 grit resin pads will do the best job of honing.
For the edges i used regular sandpaper and sanded those by hand.
Sand the concrete countertops.
The concrete mixing ratio would be 3 parts sand 2 parts aggregate and 2 parts cement.
Normally polishing is accomplished using a variable speed concrete polisher with a set of diamond sanding discs.
Use z grit discs to smooth and polish your countertops or to round any sharp jagged corners.
Our z grit discs are made out of a high quality silicon carbide sand paper that will hold up on the toughest sanding surfaces.
Dampen the concrete surface.
Remember that wet or very moist concrete will cause the grout to turn to a liquid possibly diluting the grout and causing shrinkage.
You will also need wet diamond polishing pads from 50 grit to 3000 grit depending on the look you are trying to achieve.
Metal bond cup wheels and lower grit pads are the fastest for exposing aggregates but leave the roughest surface.
I sanded the concrete countertops using my rotary sander and regular sanding discs from home depot.
Some hand polishers attach to a.