We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Pretty much all core bits don’t feature a shaft like a normal drill bit, the connection to the drill is made via an arbor. In both cases, each set of instructions should state the correct drilling speed you should be using. If in any doubt always refer to the manufacturers instructions for your particular power drill and also for the core bit you are using.

Diamond Core Bits - Hilti GB

Whether you use a light-duty diamond driller kit or a larger, heavy-duty rig, drilling through concrete and masonry will be effortless. Before you start any drilling, the first job is to measure and mark the exact spot that you want to drill your hole so there isn’t any mistakes.

Machine Mart Limited is authorised and regulated by the Financial Conduct Authority, register number 703528 and acts as a credit broker and not a lender. If you're unsure of which drill is most suitable then feel free to speak with one of our online technicians now. 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. 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. With the drill held straight and true, keep drilling, stopping regularly and withdrawing the bit from the hole to allow it to cool down.

core bits - Hilti GB Diamond core bits - Hilti GB

If however the depth of the hole is longer than the drill bit you will need to withdraw the core bit when you hit a depth of about 125-130mm and chop out the core with a hammer and bolster, or in some cases you can lever it out. Core drill sets offer a selection of popular drill bit sizes and accessories with carry case included. The BlueSpot 6 PCE Diamond Core And Suction Jig Set has a unique cutting design which provides a high precision cut with no broken edges. If the cuts made by the teeth are deeper at any point then this is a sign you are not drilling level. It is also a good idea to measure or at least try and gauge the thickness of the wall you are drilling through as this will indicate weather you can drill through in one go if your core bit is deep enough or if not the point at which you will need to stop, clear the core bit out and then continue.With a hollow centre, the cut material will remain inside and can be manually removed once the power tool is turned off, leaving the perfect circle in the cut material. Suitable for wet and dry drilling into most construction material like stone, brick, concrete and masonry. There are many core drill sizes and generally each size is manufactured to represent the size of a commonly used pipe, cable or duct so that once the hole is drilled, the object in question passes through with ease. For the neatest cut and finish to your hole it is advisable to then finish the hole from the other side. Corded power drill with safety clutch and variable speed ideal for use with a core drill How Fast Should you Drill When Using Core Bits?