What are Forstner Drill Bits and its Uses

May 13, 2021

Forstner Drill Bits and its Uses

A range of drill bit accessories, including a hole saw, spade bit, or Forstner bit, are used to cut accurate, large-diameter holes with a portable power drill or drill press.  Although every type of drill bit has its own benefits, usually the Forstner drill bits provide the cleanest holes. 

A Forstner drill bit, when used in a portable drill, tends to drift away from the center position, particularly at the initial stage. There is an easy solution to this problem, and if you drill into raw material or try to widen an existing hole with a Forstner drill bits, it will help.

What is a Forstner Drill Bit?

A Forstner bit is a unique type of drill bit with a range of applications. There are many other types of drill bits, But a Forstner bit most popular among them. Also, a twist bit, designed with a brad-point bit, is the most special. 

The Forstner is a large bore bit, mostly used for woodworking applications. These are the classic cylindrical drills found in almost any hardware store. They have an upside-down letter T-shape structure with a shaft on the top and a boring section on the bottom. These are perfect for drilling large-diameter holes.

Forstner Drill Bit Sizes

The main advantage of the Forstner drill bits are they can found in almost any size. Although not smaller than 1/4 inch, because the drill bit geometry prevents them from getting smaller, so they have very large size bits that have a diameter of many inches.

The most common size of Forstner drill bit you will find in hardware stores is 3/4 inch (+) size. This is because several users already have drilled small-diameter holes at initial with different drill bits.

What is the Smallest Forstner Bit?

The 5/64ths is the smallest Forstner bit. The regular common size is ¼’. Below that, look for a brad point for better performance. For jewelry work, they also make inverted cone burrs down to 1/2 mm that will give a similar cut.

The reason for choosing Forstner drill bits is to get a large-diameter hole and that can only possible with the Forstner bit. Also, bits are less expensive than the others.

Advantages of Using Forstner Bits

Advantages of Using Forstner Bits

There are many advantages of using Forstner bits. Here are a few of them.

  • Forstner Bits Provide Smooth bore & Clean Bottom Holes
  • There is Less Waste With a Forstner Bit.
  • These Bits don’t drift away From Center Point
  • Large-diameter Holes & Bores are possible with Forstner Bits.
  • Less Expensive
  • Good for Angled Holes.

Read: Using of Forstner Bits

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