Vertical caving terminology and methods > Rigging methods and equipment
A pipe that can be inserted into a drill hole, to blow out the dust, before inserting an anchor. This allows the anchor or any glue to grip the rock better, increasing the strength. The pipe needs to be narrow enough to fit down the hole and allow the dust to escape down the sides, as well as being long and flexible enough that it can bend away from the hole, keeping your face away from the dust that gets blown out of the hole. Aquarium air line and hydroponic pipes are common choices.
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