How to Tan Hides – 2026

Knowing how to tan hides is a useful talent to have around the campfire, and the technique you choose for tanning hides will only be determined by the intended usage, since bark tanning creates hides for an entirely different reason than brain tanning. Whether you are working with gray fox pelts, deer hides, or cowhide, each method demands precision and patience, and beginning with a small animal skin minimizes waste while you develop your skills.

Key Takeaways

• Different methods, such as bark tanning and brain tanning, are chosen based on the intended application of the leather. Each method requires precision and patience but is not overly complex or expensive.

• Begin with smaller animal skins to minimize loss and ease handling. This approach allows for learning from mistakes without wasting significant materials.

• Hides must be cleaned, salted, and preserved properly to prevent bacterial growth and collagen breakdown. Techniques like wet salting or brine curing help prepare the hides for tanning.

• Two primary tanning methods are chrome tanning, which is quick but uses harsh chemicals including chromic acids and hexavalent chromium, and vegetable tanning, which is labor intensive but produces softer and more flexible leather.

• Tools like fleshing knives, pelt scrapers, a fleshing beam, and soaking troughs, alongside materials such as salt, alum, tanning oils, and pH strips, are vital for effective tanning.

Tanning Hides for Leather

Our modern world uses tanned animal skins mostly for apparel, outerwear, and boots as well as for saddles and equipment. Although it is no longer strictly necessary, preparing the pelts of wild and domesticated animals was formerly essential for survival. The tanned leather was used to construct game bags, blankets, a bed to sleep on, coverings for animal bladder based canteens, and the only clothing and footwear material available.

Because buffalo skins are so thick and robust, they used to be the principal type of hide utilized in the production of footwear and saddles. Tanning is required before the skins can be turned into supple leather. For thousands of years, many variants of this technique have been utilized in almost unaltered form. Despite the fact that there are several variants and preferences when it comes to tan a hide, there are only two primary forms of tanning: chrome and vegetable.

Chrome tanning uses chemicals, specifically chromium sulfate and other chrome compounds, to produce a tan. Today, chrome tanned leather accounts for nearly all commercial leather items. Chrome tanning is a much faster procedure to tan hides than vegetable tanning and results in leather that is very weather resistant and easily colored. The disadvantage of this process is that it involves the use of hazardous chemicals, including chromic acids and hexavalent chromium, that will come into contact with your skin while creating clothes, accessories, footwear, horse gear, or blankets. Organizations such as the UN Leather Working Group have established standards to help regulate and reduce the environmental impact of chrome compounds used in the industry.

While vegetable tanning is more time consuming and labor intensive than chrome tanning, the resulting leather is softer and more flexible, making it an excellent alternative for garment creation if leather crafting is part of your long term goals. Vegetable oil tanned leather, produced through the vegetable tanning process using plant materials such as tannic acid derived from oak and chestnut bark, is particularly valued for its natural finish and ability to develop a rich patina over time.

In order to become leather, the pelt's protein structure must be altered by tanners, not only washed and dried like a rug or pair of boots. The process to tan hides begins with the drying, salting, or smoking stage, which is arguably the most significant. Before scraping out fat, extra flesh, and hair using fleshing knives and a scraping knife, the hide must be completely dry. The skin is then either lime treated or cleaned, and the leather is tanned and softened with emulsified oils or other tanning oils.

If you are looking for expertly crafted leather goods that reflect the finest tanning traditions, browse our full collection at Steel Horse Leather.

Historical Context and Evolution of Tanning

The art of tanning hides dates back thousands of years, with early evidence suggesting that ancient civilizations relied on this transformative process to preserve animal skins for various practical applications. Initially, tanning was performed using natural methods, such as the use of plant tannins, including tannic acid, derived from tree barks and leaves, which not only provided durability but also imparted unique qualities to the leather.

As societies evolved, so did their tanning techniques, incorporating innovations influenced by cultural exchanges through trade and conquest. The methods transitioned from rudimentary approaches to more sophisticated practices, including the use of animal fats, emulsified oils, and tanning oils, leading to the creation of various leather types suited for clothing, shelter, and tools. Natural tanning techniques such as the bark tan method remained central to leatherworking communities for centuries before industrial processes began to take hold.

Throughout history, the tanning process mirrored technological advancements and societal shifts, ultimately evolving into a crucial industry that balances time honored traditions with modern techniques. Today, communities of tanners and leather enthusiasts share knowledge through online forums where members sign in or sign up to participate, with topic listing and moderator approval ensuring that accurate information is shared, and contributors can track conversations through features like last reply notifications.

Hide Tanning Tools and Supplies

A simple board or metal frame can be used to scrape and dry the hide, or a board made to match each animal type can be used to move the front and back of the hide between it to enable more uniform drying. Before we get started with how to tan hides, let us have a look at the equipment and supplies you will need. You will not require everything on this list, as the sorts of knives, boards, and scrapers used are entirely up to personal choice.

Essential tools include:

• Fleshing knives and fleshing knife variants for removing flesh fat, membranes, and tissue from the hide

• Fleshing beam for supporting the hide during the fleshing process

• Scraping knife for thinning thick hides and removing residual debris

• pH strips for monitoring acidity during the pickling process

• Stock pots for preparing tanning solutions and soaking smaller hides

• Soaking troughs for larger hides requiring immersion in tanning materials

Some of the materials are particular to the tanning technique you select, and tanning materials will vary depending on whether you are pursuing a bark tan, a brain tan, chrome tanning, or another approach.

Transporting Hides

If the skins are not frozen when you get them home from the butcher, salt them and spread them out as flat as possible in the back of the vehicle. Never leave the hides in your truck bed overnight. A predator will notice the smell of flesh and you will wake up to discover coyotes munching on what was supposed to be your new leather coat, saddlebags, backpacks, or fur rug the next morning.

Apply additional salt if a lot of it comes off in the car on the way home. You want as much salt as possible on your hide. The salt dehydrates the hide by drawing moisture from it. While the salt is working, you will nearly always find pools of liquid and thin skin beneath the hanging hide. The length of time a salted hide is hung will be determined by the weather and the state of the hide. It may get nice and crispy in as little as a few days or as long as a few weeks.

Types of Methods of Tanning Hides and Leather

In our experience developing premium leather goods, we have found that the choice of tanning method significantly impacts the final product's quality and characteristics. For our weekender bags and leather duffle bags, we exclusively use full grain leather processed through traditional vegetable tanning methods. This choice ensures not only the leather's durability and natural beauty but also its ability to develop a unique patina over time, making each bag truly one of a kind.

Vegetable Tanning

This traditional method uses tannins extracted from plant materials such as oak or chestnut bark, making it a true bark tan in the classical sense. The vegetable tanning process relies on tannic acid and other compounds found in plant materials to permanently alter the hide's protein structure. It is a time intensive process that can take several months, resulting in durable vegetable oil tanned leather with a natural finish. However, vegetable tanning may discolor fur and is better suited for creating leather rather than preserving hides with fur intact.

Brain Tanning

This ancient brain tan method uses the oils from animal brains to tan hides, functioning similarly to emulsified oils in that the fatty compounds penetrate and condition the hide's fiber structure. While effective, it poses risks like exposure to prion diseases such as Chronic Wasting Disease (CWD) in deer and elk. Due to these concerns, alternative sources such as pig brains are often used. The process typically involves applying the brain solution and smoking the hide for preservation and flexibility.

Egg and Oil Tanning

Similar to brain tanning, this method uses raw eggs and oil to create a soft, pliable leather. While less common, it is a natural alternative for small scale tanning that draws on the same principle of using emulsified oils to condition the hide fibers.

Alcohol and Turpentine Tanning

A mixture of ethanol and turpentine is sometimes used, though it can leave leather dry and carries strong odors. Its effectiveness and practicality are less established, making it a less popular choice among experienced tanners.

Salt and Alum Tanning

A simple and accessible method using common salts like ammonium aluminum sulfate. This approach is often used for softer leathers but lacks the durability of other tanning methods and is not suited to hides intended for heavy use applications.

Chrome Tanning

The most widely used industrial tanning method, it relies on chromium sulfate and other chrome compounds to produce strong, water resistant leather. While efficient, it generates hazardous chemicals including hexavalent chromium and chromic acids as byproducts, raising serious environmental concerns and contributing to the pollution of waterways if not properly managed. Wet white tanning is a related method that uses aluminum or glutaraldehyde as an alternative to chrome compounds, producing what is known as wet white leather before the tanning process is complete.

Glutaraldehyde Tanning

An alternative to chrome tanning that also produces a wet white intermediate product, this method uses aldehyde compounds to treat hides. However, its toxicity and environmental impact make it unsuitable for small scale or sustainable tanning practices.

Preparation and Initial Treatment of Hides

The art of hide tanning and the initial treatment of animal skins is a critical step in the tanning process that sets the foundation for quality leather production. Traditional methods of tanning hides, whether through brain tanning, vegetable tanning, or chrome tanning, all begin with proper preparation. Initially, the raw hide or animal hide must be thoroughly cleaned on a flat surface to remove any bits of tendon, residual hair, or blood, which can lead to bacterial growth and undesirable odors. This cleaning process, known as part of the beamhouse operations in commercial tanneries, often requires several gallons of clean water and non iodized salt to prevent spoilage.

Beamhouse operations encompass all the early wet processing stages, including soaking, liming, and fleshing, that prepare the raw hide for tanning. The hide tanning journey continues with a process called liming, where hides are soaked in alkaline solutions containing calcium hydroxide that promotes hair slippage and softens the hide skin, making cleaning easier. Various types of hides, from deer hide to cowhide and even fish skin, can be processed this way.

Following liming, it is essential to neutralize the alkalinity with an acid solution, which could be derived from tannic acid, oak bark, or other tanning agents, ensuring that the fibers of the hide are ready to absorb tanning oils effectively. pH strips are a practical tool during this stage to confirm that proper acidity levels have been achieved. Some tanners use alternative methods like alum tanning or the brain tan method, where the animal brain is used to create a natural tanning solution. It is also worth noting that the alkalinity of perspiration can affect finished leather over time, which is one reason proper neutralization and finishing are so important during the tanning process.

The careful execution of these preliminary steps, whether using ancient methods or modern tanning chemicals, not only enhances the appearance of the finished piece of leather but also profoundly affects its durability and overall utility. Wearing safety glasses and eye protection is essential throughout this slow process, especially when working with acid solutions or caustic chemicals.

Steps of the Leather and Hide Tanning Process

Hide tanning may be broken down into several phases, depending on where you get your information. There appears to be considerable misunderstanding as to what it means to preserve, tan, or break a hide among various authorities. The stages of how to tan hides may be divided into many sections, some of which are left out, or they may be combined into a single section.

1. Skinning the animal carefully to preserve as much usable hide as possible

2. Fleshing using fleshing knives and a fleshing beam to remove all flesh fat, fat deposits, and tissues from the skin side of the hide

3. Preserving and Curing through freezing or salting with non iodized salt or alum to inhibit bacterial activity and keep hides fresh

4. Washing and Degreasing if the hide is very fatty, requiring thorough rinsing to remove grease that would otherwise interfere with tanning

5. Dehairing if you want finished leather, using a lime solution to promote hair slippage, or skipping this step if you want to tan a hide with the fur left on, as is common when working with gray fox pelts

6. Thinning through dry scraping with a scraping knife if the hide is thick

7. Tanning including the pickling process using an acid tanning solution to prepare the cells of the hide for tanning, followed by neutralizing the acid with pH strips to verify completion, and then applying tanning materials such as tannic acid, chromium sulfate, or brain solution depending on the method chosen

8. Breaking and Oiling to soften the hide by working tanning oils or emulsified oils into the fiber structure and physically manipulating the leather to break down stiff membranes

Post Tanning Care and Finishing Techniques

After the tanning process is complete, it is crucial to focus on post tanning care and finishing techniques to ensure the longevity and quality of the hide. Begin by thoroughly rinsing the tanned hide in clean water to remove excess tanning agents, after which gentle drying techniques should be employed. Avoid direct sunlight or high heat, as these can damage the leather's integrity. Once dried, conditioning the hide with an appropriate leather conditioner helps maintain its suppleness and prevents cracking.

Additionally, you may want to employ finishing techniques such as buffing or applying a protective top coat, which not only enhances the aesthetic appeal but also provides a barrier against moisture and dirt. Finally, storing the finished hide in a cool, dry place, away from direct exposure to light, will further ensure that your hard work stands the test of time. The importance of proper finishing techniques is clearly demonstrated in premium leather products like our leather backpacks, where the leather's natural characteristics are preserved while ensuring durability for daily use.

Salt Hides to Preserve for Tanning

Tanned hides can be stored in a corner for a while if they are drily salted, but wet salted skins need to be packed up tight to avoid bacteria growth. When you begin the tanning process after using dry salted hides, it appears to be more difficult to rehydrate and work the fibers. The hide must be refrigerated or salted if tanning cannot commence as soon as it is removed from the animal.

Another option is to salt with either dry or wet salt. Wet salted skins need to be packed up tight to avoid bacteria growth, while dry salted hides can be stored more loosely but may require more effort during the rehydration stage. Research on salt diffusion in cured meat, which provides insights relevant to hide salting practices, suggests that the initial salting technique is crucial for moisture removal and preservation. The study found that the diffusion coefficient of sodium declines over prolonged curing times, emphasizing the importance of proper initial salting (Bertram et al., 2005).

As a result of bacterial development, fur might start sliding out quite fast in warm temperatures. However, if you must salt a hide, do not use iodized salt or rock salt, since the crystals are excessively large and rock salt contains an excessive number of contaminants. Pickling salt is a fine grained salt well suited to this purpose. The hide must be fully coated in salt, and a reasonable rule of thumb is to use about the same quantity of salt as the animal hide weighs. Research published in 2019 suggests that for effective curing, it is recommended to use salt in quantities equivalent to approximately 10% of the hide's weight to ensure proper moisture absorption and inhibition of bacterial growth (Aheto et al., 2019).

Preparing hides begins with salt curing them to avoid collagen putrefaction due to bacterial development during the time lag between obtaining the hide and processing it. To dry hides and skins, a difference in osmotic pressure must be used throughout the curing process. Wet salting involves extensively salting the skins, and then pressing them into packs for around 30 days. A saltwater bath is used to stir the hides throughout the brine curing process, which takes around 16 hours in total. Research published in 2022 suggests that brine curing can effectively maintain hide quality with varying immersion times, depending on the type of hide and desired preservation characteristics (Du et al., 2022).

Environmental and Health Implications of Tanning

The tanning process, while essential for producing durable leather, can lead to significant environmental and health implications if not managed properly. Traditional tanning methods often utilize hazardous chemicals, such as chromium sulfate, chromic acids, and hexavalent chromium compounds, which can contaminate water systems and contribute to the pollution of waterways, posing risks to both aquatic life and human health. These carcinogenic substances can persist in the environment, leading to soil degradation and long term ecological harm.

Moreover, workers in the tanning industry may be exposed to these toxic chrome compounds, resulting in health problems ranging from respiratory issues to skin diseases. The use of proper beamhouse operations and waste treatment systems is critical for reducing these risks. Organizations like the UN Leather Working Group provide certification frameworks that encourage tanneries to adopt safer practices, reduce their reliance on hazardous chemicals, and improve transparency throughout the leather supply chain.

Therefore, it is crucial for tanneries to adopt sustainable practices that minimize reliance on harmful chemicals, such as utilizing plant based tanning agents including tannic acid derived from plant materials, or implementing advanced waste management systems to mitigate their ecological footprint. By prioritizing safer, eco friendly methods, the tanning industry can reduce its environmental impact while also safeguarding the health of its workers and nearby communities.

Eco Friendly Tanning: Sustainable Practices and Alternative Materials

Eco friendly tanning methods have gained significant traction as consumers seek more sustainable options in the leather industry. Traditional tanning processes often involve harsh chemicals that can harm the environment, but a growing number of tanners are exploring vegetable based or plant derived tannins, including tannic acid extracted from bark and leaves, that are not only safer for the ecosystem but also produce high quality vegetable oil tanned leather.

These sustainable natural tanning practices resurrect time honored techniques that utilize natural substances like tree bark, leaves, and berries to create a durable and aesthetically pleasing end product. The bark tan method, in particular, has seen renewed interest among artisan tanners who value its deep roots in leatherworking history and its compatibility with sustainable sourcing. Furthermore, the integration of alternative materials such as mushroom mycelium and synthetic bio engineered leathers is on the rise, offering innovative solutions that minimize wildlife impact and reduce waste. By prioritizing eco friendly tanning, the industry not only responds to consumer demand for sustainable fashion but also paves the way for a greener future in leather production.

Our Expertise in Traditional Leather Crafting and Tanning

At Steel Horse Leather, our deep understanding of leather processing and tanning comes from years of hands on experience working with master artisans who have dedicated their lives to this time honored craft. We have established direct relationships with tanneries that meet the standards of the UN Leather Working Group, carefully vetted our leather suppliers, and developed a comprehensive understanding of how different tanning processes, from vegetable tanning to chrome processing, affect leather quality, durability, and character. Our master artisans work exclusively with full grain leather that has been properly tanned and treated, and this practical experience with leather processing and tanning techniques enables us to share valuable insights about every stage of the tanning process, from initial hide preparation to final leather treatment.

Conclusion

It takes practice and dedication to become skilled at how to tan hides, but it is well worth the effort. Families can make full use of animals grown on the homestead or hunted for sustenance if the skins are properly preserved using methods such as salt curing, the pickling process, and careful application of tanning materials. Tanning an animal's skin can be done in a variety of ways depending on the hide's size and intended use, from working with gray fox pelts and small rabbit hides to processing larger deer or cowhide. Whether you pursue a bark tan, a brain tan, the vegetable tanning process, or chrome tanning with chromium sulfate, the key is patience, proper tools like fleshing knives and a fleshing beam, and a willingness to learn from mistakes. As you develop your skills, you will come to appreciate not only the craft itself but also the environmental and health responsibilities that come with working with tanning materials, from managing the alkalinity of perspiration's effect on finished leather to minimizing the pollution of waterways through responsible disposal of hazardous chemicals. The result, a beautiful and durable piece of leather, is a testament to one of humanity's oldest and most enduring crafts.

References

Aheto, J., Huang, X., Tian, X., Bonah, E., Ren, Y., Alenyorege, E., & Dai, C. (2019). Investigation into crystal size effect on sodium chloride uptake and water activity of pork meat using hyperspectral imaging. Journal of Food Processing and Preservation, 43(11). https://doi.org/10.1111/jfpp.14197
Bertram, H., Holdsworth, S., Whittaker, A., & Andersen, H. (2005). Salt diffusion and distribution in meat studied by 23na nuclear magnetic resonance imaging and relaxometry. Journal of Agricultural and Food Chemistry, 53(20), 7814-7818. https://doi.org/10.1021/jf051017+
Du, H., Wang, Q., Liu, Q., Chen, Q., Liu, H., Xu, M., & Kong, B. (2022). Heterocyclic aromatic amine contents and quality characteristics of bacon as influenced by nacl concentration of brine. Journal of Food Science, 87(6), 2527-2537. https://doi.org/10.1111/1750-3841.16156

Frequently Asked Questions

What is the difference between vegetable tanning and chrome tanning?

Vegetable tanning uses plant materials and tannic acid derived from bark and leaves to cure hides over a period of weeks to months, producing soft and flexible vegetable oil tanned leather that develops a rich patina. Chrome tanning uses chromium sulfate and other chrome compounds to produce leather in a matter of days, but generates hazardous byproducts including hexavalent chromium that can contribute to the pollution of waterways if not managed properly.

How do I tan a hide at home without chemicals?

Yes, you can use natural methods like brain tanning or the bark tan approach, which rely on emulsified oils from animal brains or tannic acid from plant materials instead of synthetic chemicals. Salt and alum tanning is another accessible option for beginners working with small animal skins.

What tools do I need to start tanning hides?

The essential tools for tanning hides include fleshing knives, a fleshing beam, a scraping knife, pH strips for monitoring the pickling process, and stock pots or soaking troughs for preparing and applying tanning materials. The specific tools you need will vary depending on whether you are pursuing a brain tan, bark tan, vegetable tanning process, or another method.

How long does the tanning process take?

The duration depends heavily on the method chosen. Vegetable tanning can take several weeks to several months, while chrome tanning using chromium sulfate typically takes only a few days. Brain tanning and other natural tanning methods fall somewhere in between depending on the size of the hide and the tanner's experience.

What is the best hide for a beginner to start with?

Goat, deer, or rabbit hides are easier for beginners due to their manageable size and relatively straightforward preparation process. Smaller hides like gray fox pelts also make excellent starting points because mistakes cost less material and the beamhouse operations involved are more forgiving at a smaller scale. If you want to see what properly finished leather looks like, browse our leather messenger bags for inspiration.

Is chrome tanning bad for the environment?

Chrome tanning generates hazardous chemicals including hexavalent chromium and chromic acids that can contribute to the pollution of waterways and pose health risks to tannery workers if not properly managed. Organizations like the UN Leather Working Group have developed certification standards to encourage tanneries to adopt responsible practices and reduce the environmental impact of chrome compounds.

How do I preserve a hide before tanning?

Salt the hide as soon as possible after skinning, using non iodized pickling salt applied generously to cover every part of the skin side. Research suggests that using salt in quantities equivalent to approximately 10% of the hide's weight helps ensure proper moisture absorption and inhibition of bacterial growth (Aheto et al., 2019). Wet salting followed by brine curing or dry salting and hanging are both viable options depending on how quickly you plan to begin the tanning process.

What is wet white leather?

Wet white is an intermediate stage in hide processing where the hide has been treated with alternatives to chrome compounds, such as glutaraldehyde or aluminum salts, resulting in a pale colored, partially processed hide that has not yet undergone full tanning. It is considered a more environmentally friendly alternative to chrome tanning at the intermediate stage, though full finishing still requires additional processing steps.

All of our bags at Steel Horse Leather are crafted from full-grain crazy horse leather, built to develop a rich patina over time. Browse our Leather Bags.