How do you cut an 8 inch concrete slab?

Use a standard circular saw, equipped with a corundum or diamond blade, for small tasks. For slabs, it's best to cut through the top inch, then use a sledgehammer to break off the rest. The jagged edge left below the cutting line provides a good rough edge for the new concrete to bond to.

How thick of concrete can you cut?

Slicing through slabs thicker than six inches is best left to a pro, but anything less than six inches—a depth that would include most concrete walls, patios, and sidewalks—can be cut by a DIYer with the right equipment and proper know-how.

How do you cut a concrete slab by hand?

Use your dominant hand to grip the back handle and push the blade forward and backward. Begin cutting at the edge of the concrete and slowly follow the chalk line. Don't press the blade into the ground—let the weight of the blade and saw do the work. Remove the blade every 30 to 45 seconds to avoid overheating.

How hard is it to cut concrete slab?

Wet concrete is very difficult to cut, and fully cured concrete can fracture as it's being cut. So if possible, cut concrete when it's hard but only half cured. The cut will come out smoother with less dust.

What is the easiest way to cut a concrete slab?

Use a standard circular saw, equipped with a corundum or diamond blade, for small tasks. For slabs, it's best to cut through the top inch, then use a sledgehammer to break off the rest. The jagged edge left below the cutting line provides a good rough edge for the new concrete to bond to.

Cutting Concrete with a Circular Saw

How deep can a concrete saw cut?

When concrete saw cutting, aim to cut to a depth of one quarter to even one-third of the concrete slab thickness. When cutting concrete with a circular saw you don't want to cut too shallow or else risk random cracking.

Can you put a diamond blade on a circular saw?

The perfect tile cutting blade for a circular saw when performing on porcelain, is the diamond blade, because is one of the few materials that are harder than porcelain. In a few words, the diamond blade not only score the tile but grinds it all the way through.

What tool do you use to cut slabs?

Whether you're laying your patio on concrete or any other material, a circular saw will help you get the job done in no time. But be sure to use a diamond masonry blade, rather than the standard blade used for cutting wood, which wouldn't be strong enough to saw through paving slabs.

When should I cut my concrete slab?

Timing is very important. Joints should be sawed as soon as the concrete will withstand the energy of sawing without raveling or dislodging aggregate particles. For most concrete mixtures, this means sawing should be completed within the first six to 18 hours and never delayed more than 24 hours.

How do you cut concrete without breaking it?

Make sure there are no electrical or plumbing lines under the area. Next, connect your concrete saw to a running supply of water and power it up. Make sure you wear the necessary safety gear and clothing before you begin cutting. Finally, position the saw on one of the edges of the marked area and start cutting slowly.

How big can a concrete slab be without expansion joints?

Rule #1 – Keep joints as square as possible. Rule #2 – In order to prevent intermediate cracking, space joints (in feet) no more than 2 – 3 times the slab thickness (in inches).

How long will a diamond blade last cutting concrete?

Diamond-edged blades.

They can last between 12 and 120 hours of continuous use, depending on the quality of the blade and material they're used to cut.

What is the best blade for cutting concrete?

Diamond saw blades are typically the best choice when it comes to making clean, professional cuts in concrete.

How deep can you cut with a 9 inch angle grinder?

For example a 4" grinder can go as deep as an inch and a 9" grinder can go as deep as 3" depending on the angle/ position. This grinder is very powerful, a bit heavy but that's to be expected for a unit this size.

Can you cut through concrete with a grinder?

One of the many tools you can use to cut concrete is an angle grinder. You can use an angle grinder with a diamond blade to cut concrete and masonry. For heavy-duty deep cuts in concrete, you should use a masonry cut off saw.

How deep will a 10 blade cut?

Due to this difference, the actual cutting depth of a 10-inch blade is only about 3.5 inches.

How deep can you cut with a 14-inch concrete saw?

A 14-inch circular blade on a cut-off saw is designed for a maximum depth of slightly less than five inches.