What Is A Step Drill Bit Used For

Using step drill bits.

Once pilot hole is drilled though the step drill bit can be operated at high speed and it won t catch like traditional twist bits. In thin materials like sheet metal they are used in portable pistol type drills where the minor diameter creates a hole and the major diameter opens the hole to the desired diameter. Most step drill bits are made for metal sheets and or wood. The right drill bit makes all the difference between good and bad work.

It differs from standard drill bits in that it has a conical or triangular shape. A step drill bit is a type of specialty drill bit or cutting tool used to create holes in wood or metal. This makes them expensive. Often for counterbored holes to accommodate a cap screw or countersink for a flat head screw.

Step drills are available in high speed steel models as well as materials such as titanium. Since each bit size drill holes less than 1 4 deep a step bit is mainly used for drilling thin material such as sheet metal. The range of drill bits results from the vast range of materials that need to be drilled. They are ideal for making holes in soft thin materials for enlarging holes that have already been made or for light deburring.

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A step drill bit is usually used to produce 2 or more diameter holes in axial alignment. Depending on the step drill bit used it could be material 1 8 thick or thinner. The most common material for using a step drill bit is sheet metal 1 4 and thinner. Step drills almost take on a conical shape but follow a staircase profile from a narrow point to a large base.

With metal a pilot hole is necessary. The bit features a sharp pointed tip which grows wider as one moves up along the length of the bit. The basics of using a step drill bit are quite simple. These step drill bits are designed to enlarge the hole they ve made.

This design allows you to buy just one drill bit and achieve multiple sizes holes. The high speed steel bits by contrast are typically best for thin steel and tin. In general titanium drill bits are best used on stainless steel copper brass and aluminum or for drilling through thin plastics and laminates. A step drill bit can be used to drill a range of different sized holes with a single bit.

Step drill bits are usually ground down to a tip diameter of.