Which Size Angle Grinder For Cinderblock Joints?

 
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Old 03-05-2018, 07:30 PM   #1
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Which Size Angle Grinder For Cinderblock Joints?


Hey Folk,
I normally do finish carpentry. That said, I will need to remove some joints from cinderblock in basement (to remortar). Which size angle grinder would be best? Will a 4.5" work, or will I need a 6"?
Seems like a 4.5" may not be able to get very deep into the joints (what, like about 1"?)

[I have a 9" angle grinder. But that thing would be cumbersome since it's bigger and heavier - especially doing the vertical joints - even with a 7" blade on it.]

Thanks much.
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Old 03-05-2018, 08:02 PM   #2
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Re: Which Size Angle Grinder For Cinderblock Joints?


4.5 will work with a tuck-point-blade. If you have something like this like the image below that would be the ideal for that, better joint depth control and it's much easier to make a nice straight cut.
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Old 03-05-2018, 08:42 PM   #3
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Re: Which Size Angle Grinder For Cinderblock Joints?


I use the 5" bosch tuck pointer with the sandwich blade...not a blade on the market that can compete with it in terms of quality and longevity.
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Old 03-06-2018, 04:33 AM   #4
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Re: Which Size Angle Grinder For Cinderblock Joints?


Cool. Thanks for the feedback guys. Since these are cinderblock and not brick, the vertical joints aren't as much of a problem (since they're not as short). Even still, I remembered that, a 4.5" makes it easier to get into the mortar joint vert/horizontal intersections.

Bosch sandwich blade looks like the way to go.
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Old 03-06-2018, 06:53 AM   #5
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Re: Which Size Angle Grinder For Cinderblock Joints?


Your not going to want to sink the grinder into the head joints, just cut em like a half inch.
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Old 03-06-2018, 09:54 AM   #6
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Re: Which Size Angle Grinder For Cinderblock Joints?


Quote:
Originally Posted by superseal View Post
I use the 5" bosch tuck pointer with the sandwich blade...not a blade on the market that can compete with it in terms of quality and longevity.


Oh yeah,you will change your mind quickly after you use a Latux Triple Stack Supreme.


https://www.google.com/search?q=Latu...6w_Ud-bFeWDgM:
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Old 03-10-2018, 02:27 AM   #7
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Re: Which Size Angle Grinder For Cinderblock Joints?


I'd use the 9" grinder as until you get tired, it will naturally cut faster with the added power, and control the greater hand spacing gives you.

Sometimes a chipping hammer, air or electric can out perform a grinder, especially on block that were dirty prior to being laid.

The most important thing is keeping the dust out your lungs and eyes, and off the 5.00$ of garage sale garage items in the basement, Don't forget to charge for moving anything each and every time....

If you can get the HO to let go of some the barnacles of his/her life, the job will go faster.

Don't grind out all the joints in one area at one time, unless you need the practice free underpinning.
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Old 03-10-2018, 09:57 PM   #8
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Re: Which Size Angle Grinder For Cinderblock Joints?


Arbortech AS 170.

Tom
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Old 03-11-2018, 11:14 AM   #9
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Re: Which Size Angle Grinder For Cinderblock Joints?


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Arbortech AS 170.

Tom


Good tool for lime mortar. With OPC mortar,it will shake your teeth out and not cut.
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Old 03-11-2018, 02:28 PM   #10
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Re: Which Size Angle Grinder For Cinderblock Joints?


You only need to grind out an inch so whatever grinder fits a 4 inch blade. Most of my guys prefer small (cheap) lightweight grinders since they are easy to hold, but bigger dedicated tuckpointing grinders are heavier and have a lot more power. This one is my go to grinder because I like the dust collection system on it.




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Old 03-22-2018, 08:45 PM   #11
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Re: Which Size Angle Grinder For Cinderblock Joints?


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