What is the scope of application of Combination Drill & Bit Set?

Combination Drill & Bit Sets are designed to drill holes in a variety of different common materials. These include different types of wood, metal, plastic, ceramic tile, porcelain and concrete. For most drill types in the Combination Drill & Bit Set, the angle of the tip helps determine what type of material the drill can drill. Flatter points, such as those with a 135-degree angle, are suitable for drilling into harder materials. They may need a pilot hole to keep the drill from moving. Bits with steeper points, such as those with a 118-degree angle, are suitable for softer materials. They stay centered better and produce cleaner inlet and outlet holes. Drill bits with equinox tips improve drilling accuracy by preventing the bit from drifting when you start drilling.

• What are the precautions for using Combination Drill & Bit Set?

• How to choose the right Combination Drill & Bit Set?

• What is the scope of application of Combination Drill & Bit Set?

What are the precautions for using Combination Drill & Bit Set?

Not all drills fit all Combination Drill & Bit Sets. The 3/8” size drill will accommodate up to a 3/8” drill shaft. ½” size bits will accept drill shafts up to ½” as well as 3/8” size bits. Regular drills without hex shank bit holders cannot be used with impact drivers, however, hex shank bits can be used with regular drills.

How to choose the right Combination Drill & Bit Set?

Different Combination Drill & Bit Set shapes have different working characteristics and different adaptability to the formation. Therefore, understanding and mastering the working characteristics of various crown-shaped drill bits and their adaptability to the formation is of great significance for the rational design, manufacture and use of Combination Drill & Bit Set.

The shape of the crown of the drill bit will cause differences in specific spatial positions such as the relative height difference between the products, thereby affecting the cutting volume of each composite piece, the rock-breaking ability of the drill bit and the stress. A reasonable crown shape of the drill bit can improve the stability of the drill bit, facilitate the cleaning of the bottom of the hole and reduce the wear of the cutting teeth, so as to achieve the purpose of improving its comprehensive performance.

What is the scope of application of Combination Drill & Bit Set?

The Combination Drill & Bit Set can drill soft metals such as wood, fiberglass, polyvinyl chloride (PVC) and aluminum.

Cobalt bits are very hard and dissipate heat quickly. They are mainly used for drilling tough metals such as aluminum and stainless steel.

Black oxide coated high speed steel drill bits have a surface treatment designed to help resist corrosion and improve durability. They last longer than basic HSS drill bits and are suitable for a variety of materials, including metal, hardwood, softwood, PVC and fiberglass.

Titanium-coated HSS drills generate less friction. They are stronger than basic HSS bits and stay sharp longer. They are suitable for drilling wood, metal, fiberglass and PVC.

Carbide bits stay sharp for much longer than steel, HSS or titanium bits. They are very effective for drilling tiles and masonry.

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