Common Leather working Terms Explained: A Beginner’s Guide to Leather Language

Leatherworking has its own vocabulary, and for someone just getting started, it can feel like everyone else already speaks the language.  They don’t.

Most experienced leatherworkers learned these terms slowly, often by trial and error. This guide exists to shorten that learning curve. If you’ve ever heard a word in leatherworking and thought “I should probably know what that means,” this is for you.

Types of Leather & Tanning

Vegetable-Tanned Leather (Veg-Tan)
Leather tanned using plant-based tannins. Firm, moldable, and ideal for tooling, stamping, and burnishing. Often used for belts, saddlery, and traditional leather goods.

Chrome-Tanned Leather
Leather tanned using chromium salts. Soft, flexible, and durable. This includes most upholstery leather and garment leather. Not suitable for traditional tooling or burnishing.

Upholstery Leather
Chrome-tanned leather made for furniture. Designed to flex repeatedly without cracking. Soft, often coated, and usually requires reinforcement for bags.

Full-Grain Leather
Leather that retains the original grain surface. Strong, durable, and shows natural marks. A quality designation—not a tanning method.

Top-Grain Leather
Leather that has been lightly sanded or corrected on the surface. Still strong, more uniform in appearance.

Split Leather
Leather made from the lower layers of the hide after the grain layer is removed. Often used with coatings or suede finishes.

Thickness & Measurement

Ounce (oz)
A unit of thickness.
1 oz ≈ 1/64 inch (0.4 mm)

Common examples:

• 3–4 oz: light, flexible

• 4–5 oz: common for bags

• 6–8 oz: belts, straps

• 9+ oz: saddlery

Millimeter (mm)
Metric measurement of leather thickness. Often used internationally.

Cutting & Shaping Terms

Grain Side
The outer surface of the leather—the side you see.

Flesh Side
The rough underside of the leather.

Skiving
Thinning leather in specific areas to reduce bulk at seams or folds.

Gusset
A strip or panel that forms the sides or depth of a bag.

Panel
A flat piece of leather used to construct a bag or item.

Bias (of the hide)
A direction in the leather where stretch is greater. Cutting on the bias can cause unwanted stretching.

Sewing & Assembly

Stitch Length
The distance between stitches. Longer stitches are better for leather to avoid perforation.

Walking Foot (Even Feed Foot)
A sewing machine foot that moves the top layer in sync with the bottom layer to prevent shifting and stretching.

Presser Foot Pressure
The downward force applied by the sewing machine foot. Too much pressure can stretch leather.

Backstitch
Stitching backward to lock stitches. Overuse on leather can weaken seams.

Edge & Finish Terms

Burnishing
Polishing an edge by compressing fibers using moisture and friction. Works well on veg-tan, poorly on chrome-tan.

Edge Paint
A flexible coating applied to seal and finish leather edges. Common on chrome-tanned and upholstery leather.

Folded (Turned) Edge
An edge that is folded over and stitched, hiding the raw edge completely.

Raw Edge
An exposed cut edge of leather.

Reinforcement & Structure

Liner
An interior layer (fabric or leather) added for strength, structure, or appearance.

Stabilizer / Interfacing
Material added to control stretch and add body. Often hidden between layers.

Base Panel
A stiff insert in the bottom of a bag to prevent sagging.

Reinforcement Patch
Extra material added behind stress points like straps or hardware.

Hardware & Attachments

D-Ring
A D-shaped metal ring used to attach straps.

Rivet
A metal fastener used for reinforcement or decoration.

Bar Tack / Box Stitch
Stitching patterns used to reinforce load-bearing areas.

Tooling & Decoration

Stamping
Pressing a design into leather using a stamp. Works best on veg-tan.

Tooling
Carving and shaping leather using hand tools. Requires veg-tan leather.

Laser Engraving
Using a laser to mark or remove material for designs or text. Works well on upholstery and chrome-tanned leather.

CO₂ Laser
A common laser type for cutting and engraving leather. Hotter, more charring.

UV Laser
A more controlled laser with cleaner cuts and less heat. Better for finished and upholstery leather.

Wear & Behavior

Stretch (Creep)
Slow, permanent elongation of leather under load.

Recovery
Leather’s ability to return to shape after bending or stretching.

Patina
The natural aging and surface change of leather over time.

A Final Word for Beginners

Leatherworking isn’t about memorizing terms. It’s about learning how materials behave—and the language follows naturally.

If you don’t know a term yet, you’re not behind.
You’re exactly where every leatherworker started.