You can use a tap to cut threads in a hole drilled in metal, such as steel or aluminum, so you can screw in a bolt or screw.The process of tapping a hole is actually pretty simple and straightforward, but it’s important that you do it right so your threads and hole are even and consistent. Choose a drill bit and a tap that fits the screw or bolt you want to use by making sure they’re the same size. For safety, it’s also important that you steady the item you’re drilling and you use the right drill bits.
How to drilling the hole for the threads.
1.Choose a tap and drill set in the size you need. Tap and drill sets include drill bits and taps that match each other so you can drill a hole with the bit, then use the tap that corresponds to it to add threads.
2.Clamp the metal in place with a vise or C-clamp so it doesn’t move. If the metal that you’re drilling moves, it could cause the drill bit to slip off, which could potentially cause an injury. Place the metal in a vise and tighten it so it’s secure, or attach a C-clamp on it to hold it in place.
3.Use a center punch to make a divot where you plan to drill. A center punch is a tool that’s used to knock a divot into a surface, allowing a drill to grip and penetrate the surface more effectively. Use an automatic center punch by placing the tip against the metal and pressing down until it knocks a divot. For a regular center punch, place the tip against the metal and use a hammer to tap the end and create a divot
4.Insert the drill bit into the end of your drill. Put the drill bit into the chuck, which is the end of your drill. Tighten the chuck around the bit so it’s held securely in place.
5.Apply drilling oil into the divot. Drilling oil, also known as cutting oil or cutting fluid, is a lubricant that helps prevent the drill bit from overheating and makes it easier to cut through the metal. Squeeze a drop of the oil directly into the divot.
6.Place the end of the drill bit into the divot and start drilling slowly. Take your drill and hold it over the divot so the bit is pointing straight down. Press the end of the bit into the divot, apply pressure, and start drilling slowly to begin penetrating the surface
7.Bring the drill up to medium speed and apply consistent pressure. As the bit cuts into the metal, slowly increase the speed of the drill. Keep the drill at slow to medium speed and apply gentle but consistent pressure against it.
8.Remove the drill every 1 inch (2.5 cm) to blow out flakes. Metal flakes and shavings will create more friction and cause your drill bit to heat up. It can also make the hole uneven and rough. As you’re drilling through the metal, remove the bit every now and then to blow out the metal flakes and shavings. Then, replace the drill and continue cutting until you pierce through the metal.
Post time: Aug-03-2022
