Haglof 3-thread Complete Increment Borers | .169" or .200" Diameter

Use this Haglof complete increment borer for extracting wood core samples from lumber, trees, wood poles and more. This 3-thread Haglof complete Increment Borer is available with diameters of either .169" or .200" and comes with the borer handle, a borer bit and an extractor in the selected length and model. The increment borer handle is Haglof's iconic blue color and is easy to grip. Increment Borer bit is a solid borer bit featuring a barrel tip ensuring an easy start and removal from the tree. The Haglof Borer Bit is made of hardened steel and coated with PTFE adding durability, longevity and reducing friction. The increment borer extractor is made of Stainless steel with a metallic head that is specially designed for easy wood core extraction. 3-threaded Increment Borers are the most popular increment borers and are tend to engage more quickly and take faster core samples.

Choosing an Increment Borer

Three factors to consider when ordering an increment borer are bit length, core diameter and thread style. Borer Bit Length depends on the size of the trees you will be boring. Length is measured from the tip of the threads to the end of the round section of the borer bit. This is the maximum depth the bit will penetrate. Increment borers are available from 4" to 39". For optimal penetration depth, the borer bit should be approximately one half to three quarters of the tree's diameter. Core Diameter of the wood sample is determined by the inside diameter of the opening at the threaded end of the bit. 0.169” is commonly used for general forestry use, 0.200” for wood preserving testing and 0.500” for large amounts of wood for qualitative analysis. 2- or 3-Thread style is a matter of personal preference. A 2-thread borer has two threads on the cutting edge of the bit, each originating 180° apart. A 3-thread borer has three threads, each originating 120° apart. The higher thread pitch of the 3-thread borer will penetrate deeper per revolution than a 2-thread. A 3-thread will also produce less friction because more steel is in contact with the wood. The ease at which a borer penetrates wood depends on wood hardness, friction properties and capability/strength of the user.

About Haglof Increment Borers

Haglöf Sweden increment borers are well-known worldwide and the largest borer brand. The increment borer is a classic instrument for fast and reliable results when evaluating age, increment and soundness of trees. Increment borers are also used for decay check-up, pollution control, wood density, chemical penetration control etc.

Haglöf increment borers are available in a wide variety of sizes, lengths, models, variants and core diameters for all types of wood and trees. Haglöf borers are produced with high quality steel with PTFE one-coat on the borer bit to protect against rust and resin and to reduce friction. The increment borer extractor is made with stainless steel and metal knobs. The many options of sizes and models of Haglöf Sweden increment borers guarantee the exact right borer for each specific application.

Haglöf Sweden produces the world’s largest assortment of increment borer brands, models and sizes. Haglöf Sweden increment borers have blue handles in grip friendly plastic material and a metallic lock. The borer bits are made from hardened steel with PTFE coating for protection and reduced friction. The extractors are produced in stainless steel with metallic head and special teeth for easier core extraction of the wood core.

Increment Borer Threading

Haglöf increment borers are 2- or 3 threaded.

    2-threaded borers are recommended when drilling in hardwood, with a slower penetration in the wood and less friction and stress onto the material.
    3-threaded borers will penetrate the wood faster and is suitable for most types of wood.

Lengths are available from 100 mm/ 4″ up to 1000 mm/39″

Increment borers have a long history dating back to The World Expo in Paris 1889. The German inventor’s last name Pressler is sometimes still used as a synonymous word to increment borer. Other names are Mora borer, tree borer or Haglöf borer.

The continued history for Pressler’s invention goes in different directions. One story tells that the skilled craftsman Anders Mattson from Mora, Sweden, visited the exhibition in Paris and noticed the primitive Pressler increment borer on display. Mattson bought the instrument at a cheap price with the intentions of transforming it to an instrument that could be used in and by an upcoming forestry industry. Another story tells that Mattson in Mora was contacted by toolmaker Anders Nilsson, who allegedly asked Mattson to manufacture an increment borer. Facts support both stories: at the historic forestry museum of Siljansfors Mora, Dalecarlia, Sweden, an antique borer marked A. Nilsson, Mora is displayed along with another, as old borer, marked And. Mattson. Both borers are produced in the 1890ies.

Anders Mattson owned the company Mattsons Mekaniska Verkstads AB together with his brothers. One of the brothers, Jannes Mattson, started his own company called Beus & Mattson, in 1895. Beus & Mattson started a manufacturing of increment borers named of Djos.

August Haglöf was an employee at Anders Mattson. Haglöf refined the borer and after his death in 1936, August’s sons, Anders and Erik, took over where he left off. Later on, the Haglöf brothers quit their employments at Mattson AB and started Haglöfs Mek. Verkstad i Mora AB.

The skillful and experienced craftsmen in Mora had all recognized the difficulties in manufacturing increment borers. The composition seems simple, but implies a complex manufacturing process and high level of material and manufacturing know-how.

In 1968, Beus o Mattson had changed their name to Djos and the borer production moved to Finland. The Djos borers were produced and marketed under the name Suunto. Some of the production equipment and the brand Djos was accredited to Haglöfs Mekaniska. In the early 1970ies, Ingvar Haglöf took over his family business and the increment borer production and moved it to the northern parts of Sweden. The Haglöf borer brands picked up market shares and in 1981, the American daughter office Haglof Inc opened up in Mississippi, USA. Haglöf increment borers would soon become the leading brand in North America. For more information on Swedish forestry history, see for example www.skogsmuseum.w.se

In 1937, A. E. Douglass, the scientific father of modern dendrochronology, founded the Laboratory of Tree-Ring Research in Arizona, USA. The Tree-Ring Lab is today acknowledged as the most important research centre for tree core and tree ring research in the world. One of the most important tools for a dendrochronologist is the increment borer.

Around 150 scientists and researchers are active at the Tree Ring Laboratory at the University of Arizona, and the laboratory is visited by more than 2000 professionals in the field from all over the world. Ingvar Haglöf, former CEO and founder of Haglöf Sweden, was in 2013 honored with a unique gift from the Tree Ring Lab: a section from a 3500 year old Bristle Cone-pine with the annual rings clearly visible. Haglöf Sweden had in turn the pleasure of presenting a custom made board to the Tree Ring Lab at the inauguration of their brand new laboratory building. The board contained some of the ancient industrial history concerning increment borers, as well as some antique borers.
Why choose Haglöf Borers?

    Experience & know-how
    Own production facilities
    Large product assortment
    Large stock for quick deliveries
    Quick problem solving
    Constant improvement and product development

Why choose Haglöf Borers?

    Experience & know-how
    Own production facilities
    Large product assortment
    Large stock for quick deliveries
    Quick problem solving
    Constant improvement and product development

Length

Borers are available from 100 mm or 4” up to 1000 mm or 39”.
For optimal penetration depth, the borer bit should be approximately one half to three quarters of the tree’s diameter.
Core Diameter

Standard core diameters are 4.3 mm or 5.15 mm (0.169” and 0.200”).
10 and 12 mm diameter borers are available in assorted lengths and are mainly used for quantitative analyses where large samples are necessary.
Threading

Borers are available as either 2 or 3-threaed borer bit. 2-threaded borers are recommended for hardwood. 3-threaded borers are the most popular, since they will be easier to work with and engage faster in the wood.
Borer tip

The borer tip with thread has an unique convex arc-shape to easily penetrate and cut the tree fibre.
Coating

The increment borer bits are treated and protected with PTFE-coating which reduces friction and protects against corrosion.
Extractor

The extractors are made of stainless steel and designed to extra easily pull out wooden cores.
Complete increment borer

A complete increment borer includes the handle, a borer bit and an extractor in selected length and model. Borer bits and extractors can be purchased separately.