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Safe and well-ventilated work area. Make sure you wear protective gear—Mark your cutting area. Concrete saws usually have two handles for the front and back. The back handle mainly controls the concrete saw. The lowest possible speed should be used when cutting masonry. You don't need to push down when cutting on horizontal concrete. Let the weight of the machine do the job. If you are working vertically on the wall, you must apply pressure.
How to use a walk-behind concrete saw?
A wet blade should be used for wet cutting, and a dry blade should be used for dry cutting. The cutting ways depend on what you are going to cut. Adjust the blade to make the concrete saw forward with the cutting guide. The maximum cutting depth can be 4.5 to 5.5 inches. Remember to protect your ears, eyes and airways with a face covering and hearing protection.
Does a concrete saw need water?
Dry cutting blades feature segmented cuts that prevent overheating, so they do not need water to cool down. These saws are suitable for small jobs requiring a clean cut and still get the job done at a low RPM. You can use diamond blades with or without water.
Wet cutting is suitable for jobs requiring more control over concrete dust and cooling the blade. Wet cutting blades are used for some concrete and masonry work. Most saws that require a water source will provide a water supply way. These saws run at high rpm, making them very efficient.
Use a standard circular saw with corundum or diamond blades for small projects. However, cutting concrete with a circular saw is hard for beginners. There are two types of concrete blades for circular saws: corundum and diamond blades. Corundum blades are cheap and available for concrete, asphalt, and stucco, but at a slow speed, making 1/4 to 1/2 inch deep cuts. If you only need to create some shallow cuts, an abrasive corundum masonry blade is a more cost-effective option. Diamond blades are more expensive but last longer. They can make clean and fast cuts.