Make the path then step up the bit to a larger one until you attain your target size.
How to chissel a concrete wall.
If you re thinking of cutting concrete for projects like sidewalks patios and basement walls the proper tools and a bit of effort can save you from spending money on a contractor.
For concrete 6 inches 15 cm or less in depth circular saws and cut off saws can do the trick.
If you are trying to chisel a path where you want to plant cables or pipes in a wall for a renovation or start holes in concrete you should begin with the smaller bit.
To pound 2 to 4 inch walls you can use a demolition hammer.
Use electric jackhammers and electric rotary hammers to chip it away.
Things like small houses patios and small storage sheds will have concrete approximately 2 to 4 inches thick.
How to chase out a concrete wall and fit a metal back box.
Learn more to chisel away loose concrete with this video.
A cold chisel is the right hand tool for breaking up small areas of concrete.
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Occasionally very small areas of concrete must be removed from a larger project or you may simply need to clean up the ragged edges left by a larger tool.