Concrete cutting blade


Can a circular saw use a concrete cutting blade to then cut concrete blocks?
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Yes. I bought a couple diamond blades for my ancient B&D 7 1/4" saw years ago. They eat through block or old concrete. They dissolve if you hit re-rod.
mine is something like this- (Amazon.com product link shortened)83296820&sr=8-11
The dust is horrific. I've tried taping my shopvac nozzle where it does the most good. Works OK. . .sort of. . .
But one time I got brave, plugged in to a GFCI outlet, and dribbled water from a hose right where the blade meets the cement. That's a winner. I doubt the water is as bad for the bearings as the dust was-- but I'd use a 'sacrificial' saw for the job. Get one at a garage sale for $10.
Jim
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SBH wrote:

Yes, a masonry blade will but a concrete block. It will also generate a butt ton of highly abrasive dust, which will work wonders with your circular saw.
Wear a good particle mask and get a cheap circular saw. Do it outside, where the wind will carry the dust somewhere away from mammals.
Jon
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SBH wrote:

A little more controllable, perhaps, would be an angle grinder with a masonry blade.
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wrote:

I disagree & I've tried both. The angle grinder gives less control, won't cut as deep, and is just as dusty. The up side is- you can usually get an angle grinder for $12 at harbor freight- a saw will set you back $30.
But speaking of HF--- anybody used the multitool to cut block? That should gain you control-- and have way less dust.
Jim [no job is worth doing if it doesn't involve buying a new tool]
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wrote:

A brick mason's hammer? I could cut a cinder block with one.
Even try a chisel and hammer.
(paraphrased)
Michelangelo? Why are you hammering that stone?
There's an Angel in there and I'm trying to get him out.
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That's a skill I've never been able to acquire. I have never done much masonry- but can get by in a pinch. I can break bricks and blocks into smaller pieces-- but never have been able to get them to break where I want them to. [though I've learned that block can be mortared back together fairly easily]

I've had a little better luck with an air-chisel. But I still cut them. . . dust be damned.
Jim
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wrote:

I've only worked around block masons. These guys could take a hand trowel-- break a cinder block and move on. These folks carved the cinder block. Made it what they wanted. It worked.
It is a talent.
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Or if you do anything 10,000 times, you get the hang of it.
Steve
Heart surgery pending? Read up and prepare. Learn how to care for a friend. http://cabgbypasssurgery.com
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wrote:

Some granite installers were putting in kitchen fancy stuff. Most all was granite tops cut at the shop.
Watched the HMFIC, cut granite trim with a 4" angle grinder. A diamond blade and by using a wet tile spong near the blade. The sponge trick kept the dust down. It was a nice job from that crew. Some cuts have to be done on the job.
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I see mexicans doing this all the time for pavers, my neighbor had a walk way put in, the dust made was a cloud 50ft x25x25, it was real nasty and bad for the tool and people breathing it. Renting some sort of wet saw is the only way to go.
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On 8/31/2010 6:03 PM, SBH wrote:

yes, i just did this yesterday with a 7" dewalt blade made for that purpose. Made a window into a man door on a concrete block garage.
--
Steve Barker
remove the "not" from my address to email
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