How To Sand Concrete By Hand. Work methodically across the length and width of the room. Attach a coarse, metal mesh diamond disc to the orbital floor grinder/sander machine.
Attach a coarse, metal mesh diamond disc to the orbital floor grinder/sander machine. Create this look with concrete surface retarder Sanding concrete if you have concrete that is going to be exposed architecturally, you can sand it by hand using wet and dry sandpaper or an orbital sander.
Just like sanding a concrete floor, you should partition and work section by section.
As a quick answer, a concrete mix ratio of 1 part cement, 2 parts fine aggregate (sand) and 4 parts course aggregate will cover most general domestic jobs. By using handheld tools, you can sand concrete without relying on heavy or commercial grade equipment. Create a box form large enough to hold the cast. The required quantity of cement is dumped on the sand and spread evenly.