An extremely simple but effective thought using an SDS plus drill bit is currently available. The SDS Plus bit has a few holes drilled through the true body of the drill bit, one drilled only under the carbide tip and another through the push grooves on the SDS Plus shank end of this piece.
We now have a means of attaching an electric cable to either end of the drill bit ( Cable Guide Drill ). The cable guide drill can be used with any conventional SDS and drilling equipment, there are lots of different makes on the market and this drill bit works fine when combined with some of these.
If you are want to check out other important uses of ‘drills’ (which is also known as ‘เครื่องเจาะ‘ in the Thai language ) then you can browse online websites.
The two small holes drilled to the cable guide drill don’t influence the drilling operation of the piece itself. So you don’t need to use the bit only for directing electrical wires through cavity walls, you could even use it for conventional drilling work, but it’s excellent once you must combine both tasks together.
Let us say we use the ground wire, thread this through the little hole below the carbide tip and pull on the SDS Plus drill back through the wall bringing the cable with it. Simple.