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Best Way to cut concrete with circular saw and diamomd blade.

How do you cut concrete with your 7 1/4" , 15 amp circular saw and diamond blade without ruining your saw? I have done this twice and the first time I burned out the saw and the second time the saw became locked up from the dust, even using water.
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Posted 2017-07-25T16:30:26+0000  by highwayjim highwayjim

Hello highwayjim and welcome to the Community.


It is very important to take personal safety precautions.  Were heavy clothes, gloves, kneepads, shin guards, steel-toe boots. Protect your eyes with safety glasses and a face shield. Wear a properly fitting filtration mask.  Here is a link to an OSHA safety VIDEO.  Make sure your saw is plugged into a GFCI outlet and extension cord.  Check that the housing and guard of the saw is in good condition.

A 7 ¼” blade can cut up to a total of 2 ¼” deep total.  Those cuts should be limited to ½” deep passes. Then reset your depth to an addition ½” pass, and so on.  Using a series of shallow cut will give you more control and allow the blade to cool.  You should use a trickle of water to keep the dust down.

Run your saw at low RPM, let the saw make the cut, do not push down and only cut for 30 to 45 seconds at a time and let it cool for the same amount of time before resuming your cut.

Frequently clean the dust and debris.  This will also allow the blade to cool. 

An alternative is to visit your local Home Depot tool rental.  They have both electric and gas powered concrete saws. You can rent specialized concrete saws that may your job faster and easier.  A 14” wet cutting blade can cut up to 4 5/8” clean cut.

Click here to see a VIDEO that describes a few of the saws that could help with your project.


Thank you for your inquiry.



Posted 2017-07-25T19:51:56+0000  by Char_HD_CHI
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