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Red Robin 07-28-2011 12:20 PM

Cutting patio stones
 
Hi all,

I'm trying to cut patio stones (the kind that is mostly formed concrete) to fit a walkway. I have so far used a chisel and hammer to to cut the stones. I am successful when I cut the stones straight, but I've had no luck cutting along a diagonal line- the stone crumbles into odd shapes or cracks in the wrong spot.

I am wondering how to cut these along the diagonal. I don't have many to cut, so a time consuming method is preferred over expensive.

Do I just need to sharpen my chisel and be very careful?

Thanks

RR

mustangmike3789 07-28-2011 12:26 PM

try an angle grider with a diamond blade. probably ceaper than breaking a bunch of your stones.

jomama45 07-28-2011 07:13 PM

An angle grinder will certainly work well, but if you're having fairly good luck chiseling already, I'd look for a short piece of steel angle iron (like 3" x 3" x 1/4" or larger) to chisel over. Just line the cut directly over the 90* corner of the angle iron & hit directly over the top with your hammer & chisel.

Bud Cline 07-28-2011 07:38 PM

From the backside drill a series of holes along any line you wish, drill about 80% through the stone. THEN use your chisel.

You can also use 16-20 penny nails to drive into the holes with a mallet, first one then another then another then back to the first ones again until the stone fractures.:)

When the stone finally fractures you won't see the holes from the top side.:)

You can do the same thing with the angle grinder and diamond blade idea. Cut a deep slot then drive nails into the cut.:)

Daniel Holzman 07-28-2011 09:28 PM

I had a number of cuts I needed to make in concrete block. The block was about 2 inches thick. I purchased an inexpensive (under $20) diamond tipped blade at a big box store, and used my circular saw to make the cuts. Works great. Just be sure to use adequate amount of water to keep the blade cool while you cut, and wear a good face mask (concrete dust is toxic).

Red Robin 07-29-2011 09:21 AM

Thank you all.
 
Good suggestions here. I will give it another go this weekend.

Cheers

RR


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