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For anything to be fixed, be it a shelf, cupboard, or a window frame, in most cases, a masonry drill, plugs and screws are needed. Sounds simple enough?


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Types of Masonry Bits Screws and Rawlplugs

 
Masonry Bit

Masonry BitMasonry drill bits like other drill bits are made of steel, but the actual cutting tip is of a harder metal; Tungsten Carbide. If it wasn't for this harder material, the drill would not be able to withstand the pounding it would receive in the drilling process. This tip is welded into a slot at the end of the drill bit.
In use, the electric drill should be set to Hammer, and the speed setting set to Masonry Drill Tip'Low'. Whilst drilling, the percussion and rotation of the drill cuts and breaks the masonry, and the debris created is quickly removed by means of the helical flutes of the drill bit. That said, its always a good idea to stop drilling periodically, and removing the bit from the hole to help the removal of dust along. If the debris was allowed to build up in the hole, it would jam the drills rotation.
Like all drill bits, masonry bits also become blunt with use. They can be re-sharpened, but because of the hardness of the tip, a special 'Green Grit' grinding wheel would be required.


SDS Drill BitThe SDS Drill Bit

As with the standard masonry drill bit, the one designed for the SDS machine, though made in the same way, looks very different at the end that enters the chuck. This is because the SDS chuck can only accept one diameter of shank, so the section that fits into the chuck, no matter what gauge of drill bit that you need to use are all the same size. This means that for the smaller of the bits normally use in the DIY world, there is a step between the part that fits into the chuck and the part that is used to drill the hole. In addition to this, there are grooves machined into the shank that acts as a keyway that corresponds to the chuck design so that the bit cannot slip once fitted into the chuck. As you may have already guessed, this type of drill bit will only fit into a SDS machine; it cannot be used with a standard chuck. Likewise, a standard masonry bit cannot fit the SDS machine.

 



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