Diamond twist drills are used in a rotary tool such as a Dremel or can be used in a drill press for making small holes through stones. The holes can be used for hanging the stone by a cord, leather or jewellery finding.
It is always recommended to use a coolant (usually water) when working with these drill bits. This will help increase the life of the product and offer you a better value.
It is also recommended that you wear eye protection such as safety glasses.
Do not force the drill bit, let the diamond do the cutting
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