Concrete is one of the hardest man made materials out there, and drilling through it certainly isn’t child’s play. If you tried drilling into it before, you know that there are lots of complications and specific situations that can arise during the process.
Even with prior experience, it is a good idea to read up on specific tips before you attempt it again, and doubly so if you haven’t done this kind of work before and are looking for guidance.
Let’s explain briefly what concrete actually is first. Basically, it is a mixture of sand, crushed stone, gravel and other aggregates bonded together by cement, which makes up about one sixth of any batch of concrete.
It is used for making floors and sidewalks and might be a pain to drill through if you don’t have the right tools.
Before you do any actual work, you’ll want to make sure that you have all the tools needed to make holes in such a hard material. Obviously you need a drill, the more powerful the better.
Depending on the specific job, you can even use a top of the line cordless drill since the best models can come with a built-in hammer function. Other than that, an absolute necessity is a good quality masonry drill bit that will do the actual drilling.
It would be best if your chosen drill has a hammer action, but if it doesn’t the speed is the way to go as the faster it spins, the better it will go. Make no mistake, making holes this way is a tough job whichever way you slice it, but it can be done.
You’ll want to attach a quality masonry bit to the drill’s chuck and drill continuously until the hole is deep enough. Avoid thumping the drill up and down into the hole to prevent the chuck from sustaining damage.
You’ll also want to remove the drill from the hole entirely from time to time so the dust can settle and be removed. Be sure to always keep some water at hand to treat the drill bit with so it doesn’t overheat.
On to the procedure itself. First, determine what kind of hole you need – how deep does it need to be? How wide? What will it be used for? After that’s sorted, attach a masonry bit of an appropriate diameter to the chuck.
These bits usually have a tungsten carbide brazed into the tip to make them more resilient. Their sizes range from 5 to 40 millimeters in width and they can be as long as 39 inches, so plan accordingly.
After the bit is secure, mark the spot for the hole, place the bit on it and start drilling at a low speed. After you get a foothold, increase the speed and keep on drilling until the hole is complete, following our above instructions.
If you apply what you’ve read here, the hole should be done in a reasonable amount of time and with minimal complications.