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OK guys, I am a Glazier by trade for the last 20 years and I've drilled more than a few holes. I am going to show you how to drill glass professionally, with a drill press. Then I will follow up with how most of us are going to have to drill, with just a hand held drill.
Here you can see that I have put a piece of scrap, backing wood on the drill press table. I have set the glass on top. It is already marked with an x where I am going to drill. I have put another piece of wood on top of the glass and LIGHTLY clamped the whole assembly together. You can also see the suction cup ring I am using to hold in a cooling lubricant. In the next picture you can see that you can also make a cooling lubricant retaining ring with ordinary modelers clay or even plumbers putty. Mine is modeling clay. It is of the utmost importance to use yellow! Unless you're out of yellow. Red might work.
Here you can see that I have put a piece of scrap, backing wood on the drill press table. I have set the glass on top. It is already marked with an x where I am going to drill. I have put another piece of wood on top of the glass and LIGHTLY clamped the whole assembly together. You can also see the suction cup ring I am using to hold in a cooling lubricant. In the next picture you can see that you can also make a cooling lubricant retaining ring with ordinary modelers clay or even plumbers putty. Mine is modeling clay. It is of the utmost importance to use yellow! Unless you're out of yellow. Red might work.
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