Pocket drill

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In concrete, core holes are drilled with diamond-set drill bits , as a pocket drill is only suitable for softer material

A pocket drill is a tool that in wells work for excavating sand is used or ground.

In the case of less firm soils, a sand or gravel pump or a plunger is used instead, but these only work in boreholes that are already filled with water.

The pocket drill consists of a long wooden rod with a transverse handle at the top, which is provided with an iron point at the bottom and a semicircular or quarter-circular edge that loosens the soil when the rod is turned. A sack attached to the cutting edge picks up the soil.

The Diak pocket drill has two cutting edges positioned symmetrically to the axis, the lower part of which ends in diagonally downwardly directed tips for removing stones.

See also : List of tools