How can drill glass

Make sure the drill bit is securely fastened into the drill before turning it on. Sign up for our Newsletter! Mobile Newsletter banner close. Mobile Newsletter chat close.

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Just go to the area where they sell drill bits or ask a salesperson. One issue with cheap bits, though, is that they can get dull fast or even break.

Use a diamond drill bit instead. These bits drill glass, sea glass, wine bottles, glass block and other harder materials like marble and stone. Diamond drill bits can be used to drill holes a quarter of an inch or larger. You can choose a rounded end or core bit. Diamond bits will create a smoother end product. Diamond bits are traditional for glass drilling; they will drill many holes with one bit and rarely cause breakage if properly used.

For very small holes, you can choose a small diamond drill bit with a solid, flat end, or tip. These are available in very small sizes, as small as 0. You will need an autostart quick change mandrel tool.

These pieces fit on your drill. Use the mandrel on your drill to create the first hole in the glass. Then, put the saw on the drill and place it into the hole you created with the mandrel. Drill the hole through. Part 2. Place the glass in a small container, if it fits. You could use an ice cream tub or a plastic photographic tray. You don't want to drill through into a table or something like that. Put a bit of newspaper at the bottom of the container. This will prevent you from drilling a hole through the container itself.

Another option is to place the glass on an extremely flat surface where it is completely supported. If you can, put a rubber pad or other firm, cushioning material underneath it, but the glass must be flat and supported.

In other words, don't hold the glass up as you drill or something like that. At all times be cautious about safety. Make sure that you aren't drilling in an area where you could damage something, and you want to make sure that power tool cords are not near water. Tape a small piece of dense cardboard or tape to the glass. This will help prevent the bit from slipping as you start drilling.

You could use cereal box cardboard for this purpose. Make a reference mark on the tape on the spot where you want to drill the hole. This will help guide you as you get ready to drill. Part 3. Start drilling at a very slow rpm. You want to drill slower when you are drilling into hard materials; you can find charts online that provide recommended drill speed for different materials, including glass.

Make sure it is secured tightly. You only want to create a dimple in the glass at first. Then, remove the cardboard or tape and drill faster, at about rpm. If you drill too fast, your drill bit could cause burn marks around the tip. If it seems necessary, swap in a larger bit to enlarge your initial hole.

The first hole is a "pilot" hole. It will guide the subsequent larger bits as you work your way up to the size of your finished hole [7] X Research source.

Lighten up the drilling pressure and speed even more so when the drill tip is close to breaking through the glass. When drilling glass, you should keep the drill at low or medium speeds. When you are close to breaking through, slow it down even more because this is when the glass can be the most fragile. If you press too hard on the glass with the drill, you could crack it.

Hold the drill perpendicular to the glass so that you prevent chipping. You'll want to use lighter pressure if you're new to drilling to make it less likely you make a big mistake. Use coolant so the drill bit doesn't get too hot.

This is very important. Pour a little oil or water on the area that you are drilling. Water is the most common coolant used on drill bits. You will need to use more coolant if you are drilling a harder surface. The coolant will keep the drill bit or saw and glass lubricated and cool. If the glass gets too hot while drilling, it can crack and break.

Coolant should be applied both before and during drilling. You could put a bottle with water in it and a small hole in it at the drill hole. It will trickle out and onto the hole as you drill the glass, cooling it. Again, remember to be very careful of electrical cords and water. Try putting the water in a squirt bottle and apply it as you drill. Small bits work best for creating a dimple or starter hole in the glass.

Don your protective goggles and hold the drill at a right angle 90 degrees to the glass surface. Replace the starter bit with a larger one if your project calls for a wider hole. High-speed drilling causes overheating and glass-powder buildup at the drill site; it can also ruin the bit. While the entry hole will be generally clean and smooth, the edges of the exit hole might be sharp.

Gently file down any chips or jaggedness with a grit diamond file that fits into the hole. Rinse to remove all residual dust.