Cutting stone for a curve

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Old 08-20-12, 06:41 AM
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Cutting stone for a curve

Hello,

I have a large portion of my patio done but need to cut a few curves now. Anyone have tips or pointers on how this is done?
 
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Old 08-20-12, 12:10 PM
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Very carefully!

What type of stone and how thick? Using a brick hammer and lots of time you just chip the edge piece by piece until you get what you want. Some stone will allow you to use a cold chisel and with light-to-medium hammering chip out a line and then the stone will break on that line more-or-less cleanly.
 
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Old 08-20-12, 01:18 PM
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Thanks for the response. They are 4x8 inch stones 2 inches thick. I probably have a least 50 stones to cut to make the 3 curves so i have a lot to do.

As far as the type goes. I am guessing it is colored concrete. they look like a Belgian paver stone if that helps.
 
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Old 08-20-12, 04:32 PM
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Buy a few masonry blades for your Skilsaw, and make 1/8" score lines on the top and bottom of each stone. Then use a brickset and swift tap with a 3-lb. maul to snap the stone, doing so on the top (not bottom) surface. Do any final clean-up on the stones with a masonry wheel on an angle grinder--much faster then pecking away on them with the chisel-end of a brick hammer.
 
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Old 08-20-12, 06:58 PM
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Thanks. I wil give that a try. how about some tips on technique on determining the curve. I have a soldier row currently of one type of stone and then the remainder is of a different type.

I am a little uncertain if you cut length off the solider row?
 
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Old 08-20-12, 10:10 PM
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Concrete is not stone. Bridgeman's suggestion of using an abrasive blade in a skilsaw is a good one. You can also use the abrasive blades in a 4-1/2 inch angle grinder or even go so far as to using a dry diamond disc in the grinder. Wear a faceshield, dust mask and hearing protection.

The alternative is to rent a tile saw with a diamond blade. Wet saws are faster and hold down the dust. Two inch thick pieces should be a cake walk. Remember, if these are concrete they are more likely to break along the lines of the larger aggregate (rocks) rather than straight as stone or bricks will.
 
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Old 08-20-12, 11:20 PM
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Unless your curves have extremely small radii, you should be able to make straight cuts on each section of stone. Curved cuts are rarely necessary, especially if you have a border row of stone outside of the cut members (or some kind of bender board to define the outside edge). Lay out each curve with paving pins and a string line, then lay the appropriate edge stone in its place in the field, and mark it where the string line rides over it.
 
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