VEVOR Diamond Core Drill, 6"/152mm Diameter Core Drill Bit, 14"/355mm Concrete, 5/4" Thread Core Bit, Dry/Wet Drill Core Bits w/a Blade, Diamond Wet Coring Bit for Concrete Brick, Red

£9.9
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VEVOR Diamond Core Drill, 6"/152mm Diameter Core Drill Bit, 14"/355mm Concrete, 5/4" Thread Core Bit, Dry/Wet Drill Core Bits w/a Blade, Diamond Wet Coring Bit for Concrete Brick, Red

VEVOR Diamond Core Drill, 6"/152mm Diameter Core Drill Bit, 14"/355mm Concrete, 5/4" Thread Core Bit, Dry/Wet Drill Core Bits w/a Blade, Diamond Wet Coring Bit for Concrete Brick, Red

RRP: £99
Price: £9.9
£9.9 FREE Shipping

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Description

The drill bit itself features carbide “teeth” that surround the circumference of the drill bit. Once rotating, these teeth bite into the surface you’re working on and cut their way through creating the required hole.

Another important factor to consider when choosing a diamond core drill bit is the shank type. Diamond core drill bits are available with either a standard round shank or a SDS-plus shank. The type of shank you choose will depend on the type of drill you are using and the material you are drilling. For example, if you are using a hammer drill, you will need to choose a diamond core drill bit with an SDS-plus shank, as this type of shank is specifically designed to be used with hammer drills. Choose the Right Bond If you are able to drill right the way through the wall in one go, the core drill will remove the core at exit.For example, smaller holes up to 30mm in diameter can be drilled at up to around 3000 rpm whereas large holes around 400mm should be drilled at speeds as low as 300rpm.

There are a few different types of core bit and the best one to use will very much depend on the size and depth of hole you’re drilling and the type of material you are drilling through. When hiring or buying a core bit always make sure you have the correct size and type of arbor for not only the core bit your are using but also for the type of drill you have e.g. SDS, spline, straight shank etc.As well as wearing the drill bit out much faster, the hammer action also creates a lot of vibration whilst drilling often leading to the hole ending up larger than intended. With everything assembled it’s time to start drilling your hole. Position the tip of the guide drill on your drilling mark and start the drill slowly, increasing speed slightly until the pilot drill starts biting into the wall. Essentially the speed that you drill at will be dictated to you by the size of hole you are drilling. As a very general rule of thumb, the larger the hole you are drilling and the denser the material you are drilling through, the slower the speed you should drill at.

Keep drilling until the core drill teeth hit the surface of the wall. You will feel them bite once they do.

Diamond Core Drill Hire

Medium Duty Core Drill: Wet & dry diamond core drill that can be used handheld, with a maximum drill bit diameter of 80mm, or in a drill stand with a maximum core bit diameter of 150mm. Capavle of drilling through tougher materials like masonry. The best tool to use for this is a cable and pipe detector. You simply pass it over the surface of the wall and if any items such as these are found, lights and/or a buzzer indicate their presence. How to Drill a Hole using a Core Drill As we have briefly touched on, a core drill is a drill bit which cuts large holes through masonry and concrete removing the centre part of the hole (core) as it drills and cuts its way through. As always at DIY Doctor we advise the use of purpose built tools for DIY use. Safety must always come first. Wear the appropriate safety equipment, gloves, dust masks and eye protection at all times. In the majority of domestic cases the largest hole you will need to drill will probably be around 6 inches in diameter through a standard cavity wall which will be around 300mm in depth. For anything up to this size a dry cutting diamond core bit will be more than up to the job.

Although it is not recommended, many use hammer action with these drill bits to increase their cutting speed and ability. This will ultimately wear the core bit out much faster, but as they are generally cheap this is not often seen as a major concern. With the drill held straight and true, keep drilling, stopping regularly and withdrawing the bit from the hole to allow it to cool down. When withdrawing a core bit from a hole ensure that it is still rotating. Before you start your drilling you should always make sure there are no cables or pipes hidden in the wall at the spot you intend to drill your hole.At this point you will only have around half an inch or so to drill through so take your time and once done you will be left with a nice neat and clean hole. You can never take it for granted that work hasn’t been done by someone else in this area before and it has not been recorded. The recommended speeds for drilling with diamond core bits range from 1,000 to 3,000 rpm. It is important to ensure that the core bit is rotating when entering and exiting the material being cut. 5. How many times can you use a diamond drill bit? Due to the amount of heat created during the drilling process it is necessary to keep diamond core bits as cool as possible to prevent unnecessary damage to the cutting teeth to a minimum. If the surface of the cutting teeth are subjected to too much heat the metal encasing them melts covering the diamonds and reducing cutting efficiency. If this happens the drill bit then needs to be “redressed” to expose the diamonds once more.



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