How to use diamond core bits on concrete
Many projects require the use of diamond core drills, from large-scale commercial and industrial work to advanced DIY projects. Here’s what you need to know about using diamond core bits to drill into concrete.
Use enough waterFlushing the drill bit with water while it bores into concrete serves two purposes. First, the water prevents the bit from overheating, which can cause it to degrade faster. Second, water mixes with debris to form slurry. This ensures the diamond is exposed to the material during operation. If you don’t use enough water, the slurry won’t form and the diamond will likely wear out too fast. On the other hand, using too much water won’t adequately expose the material. A good way to know if you’re using enough water is to check the colour of the slurry: if it looks like creamed coffee, you’re in good shape.
Have the right anchorA good anchor is necessary to ensure the drill remains straight and upright. Check that your anchor is rated to handle core drilling. Using the wrong anchor is not only dangerous, it also gives you a subpar result and may even damage your drill. Many come with ceiling jacks, which allow you to attach the drill to an overhead support for maximum stability.
Set pressure and speed appropriatelyDiamond tools are made of a bonding material that contains shards of diamonds. The tools are effective because as they’re used, the bond is stripped away to reveal more crystals. This helps to maintain the tool’s abrasiveness. Drilling too fast may prevent the metal bond from degrading, which means new diamonds won’t become exposed and the bit won’t be as effective. In general, it’s best to go with the lowest speed and drill pressure possible to avoid this problem. It might take a bit longer, but it’ll ensure you don’t damage your equipment.
Make sure you have enough power
Maintaining appropriate speed and pressure requires making sure your drill is outputting enough power. You can use an amp meter to determine whether your motor is running at optimal power, and refer to your owner’s manual to make sure you don’t run the motor over its recommended amperage. This could cause overheating and damage your drill.