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.
How to chissel a concrete wall.
Use electric jackhammers and electric rotary hammers to chip it away.
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Things like small houses patios and small storage sheds will have concrete approximately 2 to 4 inches thick.
Jackhammers are powerful pounding tools with various chisel like tips to break up concrete.
How to chase out a concrete wall and fit a metal back box.
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.
A cold chisel is the right hand tool for breaking up small areas of concrete.
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.
Learn more to chisel away loose concrete with this video.
Make the path then step up the bit to a larger one until you attain your target size.
For concrete 6 inches 15 cm or less in depth circular saws and cut off saws can do the trick.