What does a concrete core drill guide block do? How does it work?
To sum it up in just 2 words – Safety, Accuracy.
The core drill block is designed to provide a safer drilling process and higher degree of accuracy when core drilling with a hand held operated machine.
Generally, most people use a template made from a piece of ply wood or similar, with the required hole size cut out and place that on the floor or wall and use that as a guide to start drilling.
This can be unsafe, not very user friendly for the first time user and a hassle for wall drilling (either someone holds the template in place which is not safe or it must be secured to the wall meaning extra holes)
So a New Zealand team came up with this new innovative concept and I must admit, it works great. Quick and Easy set up for safe and accurate drilling – a win win for everyone. The block is manufactured from a hard composite to last over and over again.
So here is how simple it works.
For a 76mm diameter core drill bit you choose a 76mm core drill guide block. (They are designed to fit precisely inside your core barrel – you don’t need to work out the inside diameter, it is done for you)
- Mark out where you require the hole to be drilled.
- Drill a 16mm hole with a masonry rotary hammer drill 55mm deep
- Insert the M12 Drop in Anchor and tap down until it is just below surface and use a punch to spread the anchor to secure it into the concrete
- Place the core drill guide block over the anchor and secure down using a 90mm M12 Bolt and tighten.
- Grab your machine and place core drill barrel over the guide block and start drilling.
- Once you have drilled approx. 40mm deep you can remove the guide block if you wish.
- The drop in anchor and bolt also aid in the removal of the core once drilled to the required depth.
There you have it! Such a simple process for added safety and accuracy.