Deltagon Drill Bits Make Round Holes Round

The new Makita Deltagon SDS+ drill bits have three cutting edges rather than the traditional two and this simple formula delivers far more accurate holes, even in the toughest materials. A traditional two-edge drill bit suffers from poor directional stability, especially where the drilling of a pilot hole is not possible or practical. The drill bit tends to wander making the finished hole oversize and often actually triangular rather than round. The Makita Deltagon three-edge drill bits have a more stable tri-axial cutting performance, the three edges keeping the bit firmly in one position. The result is a hole exactly where positioned and a far better quality of round hole, especially important when using adhesive or tension fixings. Makita Deltagon drill bits have solid tungsten tips, the tungsten brazed onto the carbon steel bit which is then finished by rotary grinder to total accuracy. This formula gives a very long working life, easily justifying the cost investment. Deltagon bits should be the preferred selection for any drilling into brick, block, concrete, reinforced concrete, mortar or stone. A Deltagon bit will drill through steel cladding up to 1mm thick and then into the concrete section all in one process. The re-enforcing bars in concrete castings can cause serious accuracy problems as well as the risk of the two-edge drill bit snagging with risk to the machine and the operator. Here again the three-edge Deltagon bit proves valuable. The three cutting edges will keep the bit rotating whereas a two-edge bit will either snag beside the rebar or be forced away from the rebar elongating the hole. The three-edge bit will always deliver a round hole, safely.