When using a circular saw to cut asphalt, you'll need a diamond-tooth blade with the proper venting system. The vents between each tooth facilitate the removal of asphalt material as well as provide heat reduction during the cutting process. When cutting masonry material with a circular saw, use a worm drive instead of a conventional saw as working with masonry material can put a high amount of stress on a saw's motor. The worm drive will take some of the torque stress off the saw's electric motor, which may help prolong the tool's lifespan.
Things You'll Need
- Chalk box
- Circular saw
- Asphalt cutting blade
- Personal protection equipment
Place two marks on the asphalt to indicate the cut line using a brightly colored crayon for easy visibility. Snap a line between the two marks using a chalk box.
Insert a properly vented diamond-tooth saw blade into a circular saw designed to cut asphalt material. Check the circular saw to make sure the housing, cord and all safety features are in proper working order before operating the tool.
Rest the front lip of the circular saw's cutting table onto the ground and align the blade with the indicated cut line. Pull the blade housing back to expose the blade. Squeeze the saw's power trigger and allow the blade to spin to the full rpm.
Gradually swing the blade down into the asphalt. Move the saw in a back and forth motion while making the first plunge cut into the asphalt; doing so will make the hole slightly bigger than the cutting blade, which will help prevent kickback and blade damage.
Stop the circular saw, while the blade is still inside the cut, if you hit dirt or stone. Adjust the circular saw's cutting table by releasing the swing nut at the front and pushing down on the table so that the blade will only cut to the thickness of the asphalt.
Raise the blade out of the cut slightly and squeeze the saw's trigger to allow the blade to spin at the full rpm. Swing the blade back down into the cut and push the saw forward slowly to allow the diamond-tooth blade to cut the asphalt material.
Release the circular saw's power trigger to allow the blade to stop inside the cut once you reach the end of the cut. Raise the saw out of the cut and place it to the side. Avoid any contract with the hot blade housing or blade to prevent burns.
Tips & Warnings
- Always wear personal protection equipment, such as safety glasses, ear plugs and a dust mask, when cutting masonry materials with a circular saw.
- Cut masonry and asphalt materials in a well-ventilated area with minimal pedestrian traffic.
- Family Handyman: Repave Your Driveway for Instant Curb Appeal
- "Carpentry"; Leonard Koel; 2004
- Photo Credit David Sacks/Lifesize/Getty Images
Worm Drive Saw Vs. Circular Saw
The hand-held power saw comes in two general designs: the worm drive saw and the sidewinder saw. As implied by the name,...
What is the Advantage of a Worm Drive Saw?
Circular saws refer to tools containing spinning metal blades or discs with saw teeth that are used in cutting applications. Worm drive...
How to Choose the Right Circular Saw Blade
The perfect circular saw blade exists for nearly every job. Don't mess up your project by using the wrong one.
How to Cut Granite with a Circular Saw
Ideally, granite is cut under controlled circumstances in a well-equipped shop. But there are times where that just isn't feasible or even...
How to Cut Molding With a Circular Saw
Much of the molding that is installed on the inside or outside of a modern house can be cut with a circular...
How to Cut Through Blacktop
When you install a deck on your home or make some other improvements near your driveway, you may need to remove small...
How to Cut Though Brick Outside Walls to Put in Doors & Windows
Whether you wish to add more light to a room with a new window or include a new exterior door to access...
How to Saw Asphalt or Concrete
There are many occasions in a homeowner's life when a repair or building project requires that you cut through concrete or asphalt....
How to Cut Brick Pavers With a Diamond Blade on a Circular Saw
A patio made of brick pavers can be a challenging do-it-yourself project for homeowners who aren't afraid of manual labor. Patios are...
How to Cut an Asphalt Driveway
As a homeowner, if you have an asphalt driveway, eventually you may need to cut away sections of it for repairs or...
Types of Circular Saw Blades
The circular saw is an electrically powered saw with a rotating circular blade. Saw blades are available in sizes from 4 inches...