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In order to keep your tools in optimum condition we recommend frequent use, rinsing after work, drying and storing them in dry place. If used infrequently or in case of long-term storage we recommend coating the tool head in a fine layer of an oil of your choosing. Learn more

During a workshop by a visiting artist, Bob opened his pottery tool kit to a surprising response. Other artists were craving high quality tools too! Bob agreed to make some more Dolan ceramic tools based on these requests. Pretty soon orders began floating in from all over the world and Bob realized he was spending more time making tools than using them! Little did Bob know that over the next 20 years these Dolan Tools would gain the reputation as the finest tools in the world for ceramic artists and enthusiasts. Dolan Tools are made of top quality high carbon knife steel and fine hardwoods. These tools allow the artist to achieve unparalleled results with minimal frustration. Due to the tempered steel that we use, our tools are razor sharp when purchased, stay sharp longer and can be re-sharpened with ease in order to continue delivering the results that artists demand.

Carburizing is a steel hardening process where low-carbon steel is heated to high temperatures (typically 1560°F to 1740°F) in a carbon-rich environment. Carbon atoms diffuse into the steel's surface, creating a high-carbon layer. The steel is then rapidly cooled, resulting in a hard, wear-resistant surface while maintaining a softer, tougher core. This method is commonly used for parts like gears and camshafts that require both strength and durability.

Case hardening, as its name suggests, is designed to create a durable surface that can withstand wear and friction in applications like crankshafts and bearings. This steel hardening technique typically employs one of three main methods:

This coating will help to prevent corrosion and make sure the tool is ready when needed. If, for any reason, you determine that you need to sharpen your Dolan Tool please use caution. They are made to hold a razor's edge and are dangerous if not handled with care. The preferred methods for maintaining your tools' edge are whetstone (oil or water), a diamond file, or for a charge they can be returned to Dolan Tools and we will sharpen them.

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To help better explain the process, we’ve written an ultimate guide on the steel hardening process. We’ll go over internal structures, best techniques for testing and hardening, and even cover the varieties of hardened steel. Let’s get started!

For almost 20 years the name Dolan ceramic tools have been synonymous with dependability and durability. We've been able to provide those in the ceramics community with the high quality tools that they deserve in order to achieve the results they desire because we understand that ceramics is about more than just the clay. Our tools reflect that understanding because our everyone in our family is an artist first and a toolmaker second (although lately we've been spend more time in the workshop making them than in the studio testing them).

Our team empowers organizations and businesses to grow by equipping them with the right tools to advance their manufacturing processes. We specialize in providing high quality heat treating kilns, ovens and commercial furnaces, plus trusted customer service and support.

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Great For Trimming, Turning, Sculpting, Carving Clay and Plaster Dolan Tools are made from high carbon knife steel giving them their unique toughness and durability. In order to keep your tools in optimum condition we recommend frequent use, rinsing after work, drying and storing them in dry place. If used infrequently or in case of long term storage we recommend coating the tool head in a fine layer of an oil of your choosing. This coating will help to prevent corrosion and make sure the tool is ready when needed. If, for any reason, you determine that you need to sharpen your Dolan Tool please use caution. They are made to hold a razor's edge and are dangerous if not handled with care. The preferred methods for maintaining your tools' edge are whetstone (oil or water), a diamond file, or for a charge they can be returned to Dolan Tools and we will sharpen them. Never use power tools to sharpen your Dolan Tools. This will heat the steel and destroy the temper drastically shortening its life and making it unable to hold an edge again. The exquisite quality of Dolan Tools makes them sell out quickly. If something is out of stock it will take time to the get it back as Dolan is a small family company. However the quality is worth the wait! You Can Click on the Images Below to Jump to That Group The Dolan Story Frustrated by the poor quality of trim tools, potter Bob Dolan began tinkering in his studio to make a trimming tool that he could sharpen and even more importantly one that could hold an edge. Not too long after Bob was enjoying his creations in his studio finally satisfied with a trimming tool that could deliver the results he expected. During a workshop by a visiting artist, Bob opened his pottery tool kit to a surprising response. Other artists were craving high quality tools too! Bob agreed to make some more Dolan ceramic tools based on these requests. Pretty soon orders began floating in from all over the world and Bob realized he was spending more time making tools than using them! Little did Bob know that over the next 20 years these Dolan Tools would gain the reputation as the finest tools in the world for ceramic artists and enthusiasts. Dolan Tools are made of top quality high carbon knife steel and fine hardwoods. These tools allow the artist to achieve unparalleled results with minimal frustration. Due to the tempered steel that we use, our tools are razor sharp when purchased, stay sharp longer and can be re-sharpened with ease in order to continue delivering the results that artists demand. For almost 20 years the name Dolan ceramic tools have been synonymous with dependability and durability. We've been able to provide those in the ceramics community with the high quality tools that they deserve in order to achieve the results they desire because we understand that ceramics is about more than just the clay. Our tools reflect that understanding because our everyone in our family is an artist first and a toolmaker second (although lately we've been spend more time in the workshop making them than in the studio testing them).

Steel gets its strength from a special ingredient: carbon. Carbon steel is an iron alloy that mixes in up to 2% carbon to create different strengths. Tiny amounts of other elements can also be added for a specific job. Depending on how much carbon is used, there are three main types of carbon steel: low, medium, and high. Each offers a different balance of strength, flexibility, and ease of shaping.

This method involves adding an alloying element to the base metal to form a solid solution. When the metal solidifies, the alloy atoms within the crystal lattice increase its hardness. The effectiveness of this process depends on the size difference between the solute and solvent atoms. Larger solute atoms create compressive strain fields, while smaller solute atoms cause tensile strain fields. This distortion of the lattice increases the hardness and strength of the metal.

In quenching, steel is heated above its critical temperature into the austenite range, maintained at this temperature, and then rapidly cooled, typically in water, oil, or molten salt. For hypoeutectoid steels, the heating temperature is set 30-50ºC above the austenite solubility limit. For hypereutectoid steels, the heating temperature is above the eutectoid point. Quenching induces a martensitic transformation, significantly hardening the steel. However, this makes the steel very brittle. To reduce brittleness and alleviate internal stresses, tempering is essential. This involves reheating the quenched steel to a lower temperature to achieve the desired balance of hardness and toughness. You can use an industrial kiln for precise temperature control.

Frustrated by the poor quality of trim tools, potter Bob Dolan began tinkering in his studio to make a trimming tool that he could sharpen and even more importantly one that could hold an edge. Not too long after Bob was enjoying his creations in his studio finally satisfied with a trimming tool that could deliver the results he expected.

Tool steels are ideal for making sturdy drills and cutting instruments. Tungsten, cobalt, vanadium, and molybdenum distinguish these steels from others. Cold working, which applies extreme pressure, and steel heat treatment operations like quenching, which rapidly cools the material, give tool steels their outstanding hardness. Tool steels become highly wear-resistant after hardening, making them perfect for demanding industrial applications.

Steel hardening can be achieved through several techniques, including thermal, mechanical, chemical, or a combination of these methods. Among these, thermal hardening is the most prevalent. This process typically consists of three main stages: heating, holding, and cooling. In the initial stage, the metal is heated to a high temperature to induce internal structural changes, making it more malleable for reshaping. Before you get started, make sure you get a proper heat treat oven. The various steel hardening methods include:

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In the world of steel microstructures, martensite is the hardest. It forms when steel is rapidly cooled (quenched), trapping carbon atoms within the iron's structure to create a very strong solid solution. The resulting microstructure consists of needle-like crystals, making the steel very hard but also somewhat brittle. Martensite is also significant in iron-carbon and iron-nickel-carbon alloys.

This testing method is ideal for evaluating the hardness of very thin materials or those that are prone to fracturing easily. It uses a diamond-tipped indenter shaped like an elongated pyramid to make a small indentation on the surface. By meticulously examining the indentation under a microscope and measuring the length of the long diagonal, the material's hardness is calculated.

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Austenitic steel features a tough internal structure, characterized by a face-centered cubic lattice that allows for a high degree of ductility and carbon solubility. This structure is stable at high temperatures, typically between 1333.4°F and 2732°F,making austenite robust and workable under hot conditions.

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This process modifies the surface composition through the introduction of nitrogen. Initially, the steel is heat-treated to achieve a tempered martensitic structure. It is then exposed to an ammonia atmosphere at approximately 500-550°C for 12-36 hours. This treatment incorporates small alloying elements such as aluminum or chromium, enhancing the formation of finely dispersed nitrides. These nitrides significantly elevate surface hardness and resistance to wear, surpassing the hardness of martensite alone.

The two most common drill point styles are 135° split point and 118°. As you can see from the picture, the 135° has four cutting edges while the 118° has two.

Ceramic tools

The exquisite quality of Dolan Tools makes them sell out quickly. If something is out of stock it will take time to the get it back as Dolan is a small family company. However the quality is worth the wait!

Hardenable alloy steels are a speciality. Copper, nickel, manganese, boron, and vanadium are added to alloy steels, unlike carbon steels. These additional ingredients are vital to hardening.  They prevent austenite, a high-temperature steel structure, from decomposing. During quenching, martensite, a hard microstructure, forms due to this delay. Second, solid solution hardening strengthens alloy steels. This technique adds fine particles to the steel's matrix, making it harder and less deformable. These mechanisms make alloy steels harden well, making them ideal for demanding applications.

Hardness is quantified through various index numbers rather than a single unit of measurement. The specific index used to describe a material's hardness depends on the type of hardness test employed. Common methods for measuring hardness include:

Never use power tools to sharpen your Dolan Tools. This will heat the steel and destroy the temper drastically shortening its life and making it unable to hold an edge again.

The Rockwell test measures hardness by using an indenter (either a hard steel ball or a diamond cone) to penetrate the material twice. The first penetration, using a minor load, sets a reference depth. The second penetration, using a major load, measures the additional depth of indentation. The difference in depth determines the Rockwell hardness value, which is read directly from a dial or digital display.

Steel isn't universal; it's versatile because different applications demand different characteristics. The strength, hardness, and flexibility of steel depend on its internal structure, a microscopic arrangement of atoms. As engineers needed tougher materials , they developed processes to harden steel. Raw steel may not be strong enough for a skyscraper or vehicle chassis, but altering its internal structure can dramatically boost its strength and hardness. Steel hardening involves regulated transformations that favor a better internal arrangement. Let's explore steel's interesting microscopic building blocks to comprehend this.

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Pearlite represents the softer side of steel. It forms when steel cools slowly, allowing iron atoms to settle into a layered pattern of ferrite (iron) and cementite (iron carbide). This combination results in a material that is strong yet bendable, suitable for applications requiring flexibility.

This process entails subjecting steel to a carbon-rich environment at elevated temperatures. This atmosphere is typically created using high-quality coal or dissociated natural gas. Carbon atoms penetrate the metal's subsurface, forming a high-carbon layer. Upon rapid cooling (quenching), this layer transforms into a tough, wear-resistant martensitic surface.

The Vickers hardness test utilizes a diamond pyramid with a square base as the indenter. This pyramid is pressed against the material's surface under a specified load for approximately 10-30 seconds. The size of the resulting indentation's diagonals is measured, and the material's hardness is calculated using these measurements.

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In this test, a predetermined load is applied to the material's surface using a steel or carbide ball of known diameter. The Brinell Hardness Number (BHN) is derived from the diameter of the resulting impression. By measuring both the impression diameter and the ball diameter, the BHN is calculated using a specific formula.

In order to keep your tools in optimum condition we recommend frequent use, rinsing after work, drying and storing them in dry place. If used infrequently or in case of long term storage we recommend coating the tool head in a fine layer of an oil of your choosing.

Stainless steels are a category of steel distinguished by their exceptional resistance to corrosion and wear. This enhanced durability stems from the inclusion of chromium, a key alloying element, at a concentration between 10% and 20%. Furthermore, stainless steels can be further classified based on their internal structure and the presence of additional elements.

This technique involves deforming the metal at temperatures below its recrystallization point, significantly altering its properties. Cold working enhances yield strength, tensile strength, and hardness while reducing ductility. Strain hardening, a crucial strengthening mechanism, occurs due to the buildup and entanglement of dislocations during plastic deformation. Although approximately 90% of the energy from cold working is released as heat, the rest is retained within the crystal lattice, increasing its internal energy.

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Steel by itself is a strong material, but steel hardening takes it to the next level. This process significantly boosts the metal's strength and durability, making it ideal for demanding applications. Imagine transforming ordinary steel into a dependable material capable of withstanding heavy loads and harsh wear. That's the power of steel hardening, and we have explored the various techniques used to achieve this remarkable transformation.

Heat treating helps metal fabricators make strong, durable materials. The hardening procedure accurately heats and treats metal  to improve mechanical qualities. Manufacturers control this heat treatment to assure high-quality products.

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