Veg-tan and chrome-tan: choosing the right tannage
Tannage decides whether leather can be tooled, dyed, wet-formed or simply sewn. It matters more than colour.
What this covers
- Two processes, two materials
- What vegetable tanning gives you
- What chrome tanning gives you
- How to tell them apart
- Combination tannage
- Dyeing behaves differently
- Wet forming only works one way
- Edge finishing
- Choosing for a first project
Two processes, two materials
Tanning converts raw hide into leather, and the method used changes the result more than any other single factor. Vegetable tanning uses tannins from bark and plant matter over weeks. Chrome tanning uses chromium salts and takes a day or two. Both produce leather; they produce leathers that behave almost nothing alike.
What vegetable tanning gives you
Veg-tan is firm, holds a tooled impression, wet-forms into shapes and darkens with handling and sunlight into a patina. It takes dye readily and burnishes to a smooth edge. Those properties are why it is the standard for belts, holsters, sheaths, saddlery and anything carved or stamped.
What chrome tanning gives you
Chrome-tanned leather is softer, more flexible, more water-resistant and available in a far wider colour range. It does not hold tooling and does not burnish the same way. It is the usual choice for garments, upholstery, soft bags and linings, where drape matters more than structure.
How to tell them apart
Veg-tan in its natural state is a pale tan colour with a firm hand and a distinctive smell. Chrome-tanned leather is usually dyed through and often has a pale blue-grey core visible on a cut edge, a legacy of the tanning liquor. A cut edge tells you more than the surface does.
Combination tannage
Some leathers are chrome tanned then retanned with vegetable tannins, which produces a middle ground: more body than pure chrome, more flexibility than pure veg. These are common in bag leathers. They generally will not tool properly, so treat them as chrome-tanned for planning purposes unless the supplier says otherwise.
Dyeing behaves differently
Veg-tan absorbs spirit and water dyes deeply and unevenly if the surface is not prepared, which is why casing and even application matter. Chrome-tanned leather is usually already dyed through and resists further colouring; surface finishes will sit on top rather than soak in and can rub off with wear.
Wet forming only works one way
Soaking leather and forming it over a mould is a veg-tan technique. The fibres set as they dry and hold the new shape. Chrome-tanned leather will get wet, may stain, and will return to being flat. Any project involving a moulded shell, a knife sheath or a formed case starts with veg-tan.
Edge finishing
A veg-tan edge can be sanded, dampened and burnished until it is glassy, which is much of what makes hand-made goods look finished. Chrome-tanned edges do not burnish; they are normally painted with edge coat instead. Neither is better, but they need different tools and different time budgets.
Choosing for a first project
If you want to tool, carve, stamp, wet-form or burnish, buy veg-tan. If you want something soft that sews easily and comes in colours, buy chrome-tan. Buying the wrong one and then fighting it is the most common early frustration, and it is entirely avoidable by reading the tannage before the price.
How this applies when you are buying
Leather weight is quoted in ounces, where one ounce is roughly 1/64 inch. Light 2-3oz leather folds and stitches easily and suits linings, wallets and bag panels. Heavy 8-9oz holds a tooled impression and is what belts, holsters and sheaths are cut from. If a listing states a weight, it is the manufacturer figure.
Pre-cut panels and sheets in known sizes, from lightweight lining leather up to heavy tooling weights. Buying a cut panel means you know exactly what arrives, which matters when the piece has to come out at a specific dimension.
On the shelf at the moment
These come straight from the Global Leathers shelf as you read this, not from a list typed when the article was written, so the prices and the availability are current.
- Leather Sheet for Crafts, Leather for Crafting, Genuine Cowhide – $17.99
- ELW Vegetable Tanned Leather 8-9 Oz. (3.2-3.6mm) Thickness – $39.98
- Large Sheets of Leather Scraps for Crafts Sewing Hobby Workshop Crafting Leather Sizes – $29.99
Where to go from here
All of the above is the reasoning we use behind the counter at Global Leathers when someone asks. If you are weighing up two options and the listing does not settle it, ask: +1 212-244-5190 during opening hours, or hello@aleatherworks.shop, answered within one business day.
If you order from us
Standard shipping is a flat $9.95 anywhere in the United States, and it is free once the order passes $75. Weekday orders normally leave Global Leathers the next working day, with three to seven business days in transit after that. Unopened items can go back within 30 days of delivery. Shipping Policy · Refund and Returns
Related sections of the shop
Related reading
- Leather weight explained: what ounces actually mean – Ounces are the only number that reliably predicts how a piece of leather will behave. Here is how to read them.
- Getting a clean edge: sanding, dampening and burnishing – A burnished edge is the difference between handmade and homemade. The process is simple and almost entirely about patience.
- The leathercraft tools worth buying first – A short list of tools that actually change results, and the expensive ones that can wait.
Who wrote this
Written by the team at Global Leathers, a leather crafting supplies shop at 253 W 35th St Store Front, New York, NY 10001. The guidance here is what we tell customers across the counter, and it is based on the products we actually stock and the questions we are actually asked. Where we are not certain of something, we say so rather than fill the gap. More about the shop · Contact us
