In this section of the article, I’m going to talk about some of the features that you should look for when buying an air compressor specifically for sandblasting. Like I’ve said before, air compressors have a lo. [pdf]
A down-the-hole drill, usually called DTH by most professionals, is basically a jackhammer screwed on the bottom of a drill string. The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water or drilling mud). The DTH hammer is one of the fastest ways to drill hard rock. The system is thought to have been invented independently by Stenuick. Origin of the nameDTH is short for “down-the-hole”. Since the DTH method was originally developed to drill large-diameter holes downwards in surface-drilling applications, its name originated from the fact that the percussion mechanis. .
In DTH drilling, the percussion mechanism – commonly called the hammer – is located directly above the drill bit. The drill pipes transmit the necessary feed force and rotation to the hammer and the bit, along with the flui. [pdf]
Small hole rock drilling tools are mainly used with hand-held, air-leg, and rail-type pneumatic rock drills for shallow-hole drilling and small-diameter blast hole drilling in mining, stone quarrying, and similar applications. [pdf]
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