Multi-Purpose Drill Bits

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What are Multi-Purpose Drill Bits?

Multi-purpose drill bits are a type of drill bit that can drill into various materials, such as wood, metal, plastic, and masonry. They have a carbide tip that can withstand the impact and friction of drilling into different surfaces. Multi-purpose drill bits can be used with standard drills or hammer drills, depending on the type of shank and the mode of operation.

How are Multi-Purpose Drill Bits Made?

Multi-purpose drill bits are made from different materials and coatings, depending on the type and quality of the drill bit. Some common materials and coatings used for multi-purpose drill bits are:

  • High-speed steel (HSS): This is a type of carbon steel with chromium and vanadium additives. It can withstand high temperatures and is suitable for drilling wood, plastic, and soft metals.
  • Cobalt: This is an alloy metal that can resist heat and wear. It can drill through tough materials like stainless steel and cast iron.
  • Carbide: This is one of the hardest materials on earth, made from a mix of tungsten metal and carbon. It can drill through masonry, tiles, and concrete. Some drill bits have only a carbide tip, while others are made entirely from carbide.
  • Tungsten carbide: This is a type of carbide that is even more hard-wearing than standard carbide. It can drill through various materials, such as wood, metal, plastic, and masonry.
  • Titanium: This is a coating that is applied to HSS or cobalt drill bits to increase their durability and performance. It can reduce friction and heat and prevent corrosion and wear.
How to keep Multi-Purpose Drill Bits last for a long time?

  • Use the right drill bit for the material and the task. Different types of multi-purpose drill bits have different capabilities and limitations. For example, do not use a spear point drill bit for drilling metal or wood, as it may damage the bit or the material.
  • Use the right drill mode and speed for drilling. Depending on the type of shank and the material, you may need to use a standard drill or a hammer drill, and adjust the speed accordingly. For example, use a hammer drill with a high speed for drilling masonry and concrete, and use a standard drill with a low to medium speed for drilling wood and plastic.
  • Use water or cutting oil to keep the bit cool. Drilling generates heat and friction, which can wear out the bit faster. To prevent this, you can use water or cutting oil to lubricate and cool the bit while drilling. Drill a few inches at a time, then withdraw the bit and dunk it in water or oil before continuing.
  • Clean and store the bit properly after use. Remove any dust or debris from the bit with a brush or a compressed air can. Wipe off any water or oil from the bit with a towel. Store the bit in a dry and secure place, preferably in a case or a holder that protects it from damage.
  • Sharpen or replace the bit when needed. If the bit becomes dull or glazed, you can sharpen it by raising the weight on the bit while reducing the water flow, until the cut improves. Then return both the weight and the water to their original levels. If the bit becomes chipped or cracked, you should replace it with a new one.