The lost-cone drilling set is used for drilling according to the lost-cone method. This is a manually controlled set, using an electrical percussion hammer to hammer the lost cone and the accompanying casing into the soil. The lost cone produces a very straight bore hole that is slightly wider in diameter than the casing, to reduce the friction.
This procedure makes it easier to reach greater depth and the friction when extracting the casing is limited.
After drilling the lost cone is left in the soil; this does not cause any environmental problems as the material used is present in the soil by nature. The method is also ideal for installing wells in stony soils; It is also the safest way to lower explosives