A Concrete core drill is a specialized tool designed for drilling through various thicknesses of concrete with a wide range of concrete core bits. Unlike drilling through wood, sheet rock or plastic, concrete core drilling is a difficult and timely procedure for the typical do-it-yourself homeowner. Boring small concrete holes are typically easier and safer with sharp concrete bits than drilling larger diameter concrete holes (concrete drill bits can be as large as 72 inches-even larger). Always utilize caution with and hand-held core drills or core rigs.
There are two types of concrete drills: hand-held and core rigs. A Hand held concrete drill is a mobile tool utilized for smaller holes and generally take smaller diameter core bits. These types of tools are predominantly powered by electricity and cost much less than stand mounted core rigs. Handheld core drills are perfect for boring holes to make passages for small utilities-wires, pipes and cable.
Stand mounted concrete core rigs are utilized when large amounts of concrete are needed to be removed. Core rigs are able to take a much broader width of core bits because they are more stable and provide the user with a greater measure of security. The stand mounted concrete drill is fastened to the surface you are going to drill by bolts, making the drill safe and secure and easy to use. This also allows the drill to be used on vertical or horizontal surfaces; a major benefit for running larger utility lines. Unlike concrete handheld drills-which run primarily on electricity, concrete core rigs come with electric, gas and air power supplies.
Concrete bits act just like regular wood hole saws and are mounted on shafts of varying length to accommodate a wide range of concrete depths. Extenders are used to reach even greater depths. Unlike wood hole saws, the teeth of a core bit are diamond and able to penetrate concrete easily. Depending on the job, core bits have a variable life expectancy, but should always be kept sharp and not used past their time. The danger to the user grows exponentially the duller the bits.
There are many professional companies that offer their services to bore concrete holes for any purpose. If you choose to do the job yourself, please research the topic well and know your tools. Saving money as a do-it-yourself homeowner is always off-set by a trip to the hospital. Be safe.
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