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(1) Start drilling a hole on crystal. |
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(2) Using diamond bit |
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(3) Mark where you are going to drill. |
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(4) For avoiding heat up, please soak the bit in water (not motor handpiece). |
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(5) For beginning, please use thin bit. |
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(6) The water become cloudy when drilling. |
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(7) Use thicker bit step by step, and when it’s drilled 80% of depth, got to backside. |
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(8) Same to step (3), drill from backside of crystal（For avoiding crack） |
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(9) After all pass through, adjust the hole with diamond bit. |
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(10) Finished drilling a hole. |
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