First, we need to buy professional diamond drill bits special for glass.
Second, you need to know how to drill a glass in the proper operation method.
Settle the diamond drill bit on a hand drill machine or table drilling machine.
Mark on the position of the glass sheet which you are going to drill.
You need to hold the drill with 45-degree angle with the glass, feed slowly, use cooling water.
Hold the drilling machine make the drill bit gradually straight with glass
.If you are using a table drilling machine, you surely can drill a hole directly with a straight angle,
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