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Old 08-07-2014, 07:54 PM  
slownsteady
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Default cutting concrete block with a table saw

I need to cut a couple of concrete cap blocks for a retaining wall. I have used my circular saw in the past and I have to make two cuts bc the 7" blade isn't big enough. So can I put a 10" diamond blade on my table saw and run the block through on that...or am I just asking for a headache?

Alternate plan would be to rent a larger circ saw for about $40


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Old 08-07-2014, 08:18 PM  
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Cut it from both sides with 7.25 blade, Total cut will be almost 4 1/2"


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Old 08-07-2014, 08:30 PM  
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so you don't recommend the table saw?
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Old 08-07-2014, 08:38 PM  
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The cost of a 10" blade would be a factor for me. I like to drible water on the cut so it would depend on the table saw.
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Old 08-07-2014, 09:05 PM  
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You can get a 10" blade for dry cutting and it will work but I would wear clothing that covers everything and good safety glasses because it will throw little pieces of sand and they hurt.

If you have a block yard nearby see if they have a wet saw, many do.

Also I have a 14" gas powered cutoff saw and you can rent them by the day at depot or any other rental yard. They have diamond blades for those too. We use them daily.
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Old 08-07-2014, 09:08 PM  
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We can rent the saw too, but we have to have our own blade.
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Old 08-07-2014, 09:16 PM  
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Yeah, the saw is about $40 for the rental and I can get a diamond blade rental for an additional $40 (!?) or I can buy a 10" diamond blade for the same $40. Considering I have to make only about 2 or 3 cuts, the cost of a rental seems silly. I have used the 7.5" saw to do this before and that's okay but i was wondering if the table saw would be better or worse. It def would be more expensive if I trashed my table saw.
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Old 08-07-2014, 09:19 PM  
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The cut wouldn't hurt the saw it would get sand blasted or maybe some sparks or if you run water, what about the motor.
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Old 08-07-2014, 09:29 PM  
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I would cut it dry on the table. i usually just cut dry with the circ saw too.
The more I think about it, the more i want to stay with the circ saw. I already have that blade, so it's no additional cost at all. And Chris makes a good point - the blade rotation on the table saw would throw more stuff my way.
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Old 08-08-2014, 09:08 AM  
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I cut a bunch of of concrete blocks just using an angle grinder with a diamond blade. Even though I couldn't cut all the way through I cut it around and just snapped it off at the cut.
Frankly, the snapped part looked more natural than the cut parts but any ragged edges can be dressed with the tool.


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