From the Bench: Leathercraft Notes by Heirloom Leathercraft
Notes on craft, leather, and the work behind the work. Written by Beatrice Amblard, Hermes-trained master leather artisan, from her atelier in San Francisco.
From the Bench
The Saddle Stitch: Why a 200-Year-Old Technique Still Matters
Every machine stitch shares a single vulnerability. One thread breaks, and the entire seam unravels. The saddle stitch does not work this way. It uses two needles and one continuous thread, each needle passing through the same hole from opposite sides. If one thread snaps, every stitch holds independently. The seam stays intact. This is the foundation of everything we teach at Heirloom Leathercraft. It is also the technique that has defined the finest leather goods in the world for over two centuries. How the Saddle Stitch Works A machine lockstitch loops a top thread around a bobbin thread beneath the material. It is fast. It is efficient. It is also structurally fragile, because the two threads depend on each other. Cut one, and the other pulls free. The saddle stitch takes a fundamentally different approach. The artisan uses a single length of linen or polyester thread with a needle at each end. An awl or pricking iron creates the holes. Then each needle passes through the same hole, one from the front and one from the back, creating an X pattern inside the leather. Every stitch is independent. Every stitch locks itself. The result is a seam that actually gets stronger with age. As the thread settles into the leather, the fibers compress around it. The stitches tighten. A well-executed saddle stitch on quality leather will outlast the person who made it. Where the Technique Comes From The saddle stitch traces its lineage through the great European leather houses. At Hermès, where our founder Béatrice Amblard trained, every leather good is sewn by hand using this method. A single Kelly bag requires eighteen to twenty-four hours of hand stitching. The maison has used this technique since Thierry Hermès founded the company in 1837, originally making harnesses and saddles for the carriages of European nobility. The name itself tells the story. This was the stitch used to make saddles, where failure meant a rider on the ground. The technique had to be indestructible. Two hundred years later, the standard has not changed. Béatrice learned the saddle stitch at the Chambre Syndicale de la Couture Parisienne and refined it during her years at Hermès. She teaches it exactly as she learned it: with obsessive attention to thread tension, stitch angle, and consistency. Why It Cannot Be Automated Machines cannot replicate the saddle stitch. The reason is simple. A machine operates from one side of the material. The saddle stitch requires simultaneous access to both sides, with each needle guided by feel through the same hole. The artisan adjusts tension stitch by stitch, responding to variations in the leather, compensating for thickness changes at seams and edges. This is why it remains a hand technique. Not out of nostalgia or marketing. Out of structural necessity. What You Feel When You Learn It Students in our workshops and Core Program learn the saddle stitch from their first session. The initial experience is humbling. The rhythm is unfamiliar. Your tension will be uneven. Your spacing will drift. Then something shifts. Usually in the second or third hour, your hands begin to understand the motion before your mind processes it. The stitch becomes meditative. You stop thinking about the technique and start feeling the leather respond to it. This is the moment Béatrice watches for. It is the point where a student stops performing a stitch and starts practicing a craft. The Difference You Can See Once you learn the saddle stitch, you cannot unsee the difference. Machine-stitched leather goods have perfectly uniform stitches that sit flat on the surface. Hand saddle-stitched goods have a subtle diagonal pattern, each stitch angled slightly by the natural motion of two needles passing in opposite directions. Look at the stitching on a bag the next time you are in a store. If every stitch is identical and perfectly vertical, it was made by a machine. If there is a gentle, consistent slant, and the thread sits slightly raised from the leather, someone sat at a bench and sewed it by hand. That distinction, once you know it, changes what you are willing to carry. Learn the Saddle Stitch Every class at Heirloom Leathercraft includes the saddle stitch. In our two-hour workshops ($175), you learn the fundamentals. In Level 1: Foundations ($5,000), you develop the technique across multiple projects until it becomes second nature. The stitch is the through-line of the entire curriculum, from first workshop through the 12-Week Artisan Training Program. Béatrice teaches it the way she learned it. There are no shortcuts, and no substitutes.
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What to Expect in Your First Leathercraft Class
You have never worked with leather. You are not sure what to expect. By the end of two hours, you will have handled the tools of a tradition that predates industrial manufacturing, and you will understand, in your hands rather than in theory, why some objects last a lifetime. Here is what your first session at Heirloom Leathercraft looks like. You arrive at 15 Clement Street in San Francisco's Inner Richmond. The studio is inside April in Paris, the boutique Beatrice Amblard has run since 2012. The atelier is in the back. Workbenches, thread, awls, pricking irons, and full-grain leather are laid out for the session. The Tools in Your Hands In a two-hour workshop ($175), you work through one of two current sessions: Core Skills in Pattern Making & Minimum Waste Cutting, or a Seasonal Workshop where you create a Personalized Valet Tray. The session starts with tool orientation. You learn the names and purposes of the hand tools used in traditional French leatherworking. These are the same tools Beatrice used at Hermes. They are not decorative. They are working instruments, and you will use them properly from minute one. Then you move to technique. In the Pattern Making workshop, you learn to read a pattern, cut leather with minimal waste, and understand the relationship between design and material efficiency. In the Valet Tray session, you build a finished object from start to end. The Saddle Stitch The foundation of everything taught at Heirloom is the saddle stitch. Unlike a machine stitch, which uses a single thread locked by a bobbin, the saddle stitch uses two needles and one thread, each needle passing through the same hole from opposite sides. If one thread breaks, the remaining stitches hold. This is the technique used in Hermes leather goods. It is why those objects last decades. You will practice this stitch repeatedly. Beatrice teaches it exactly as she learned it at the Chambre de Commerce de Paris and refined during her years at Hermes. The emphasis is on tension, consistency, and angle. It will feel unfamiliar. That is expected. What Changes in You This is the part most people do not anticipate. You walk in thinking about leather. You leave thinking about precision. The workshop does not just teach you a craft technique. It recalibrates your sense of what "done well" means. You will notice stitching on bags you pass in stores. You will see shortcuts you never saw before. Whether this leads you to Level 1: Foundations ($5,000) or remains a single afternoon of focused work, the shift in perception is real. What Happens After Many students leave a workshop and continue. The next step is Level 1: Foundations ($5,000), which builds technique across multiple weekly sessions. There is also the Introduction to the AMBLARD Method ($800), a single-day intensive covering core principles in concentrated form. You do not need to decide anything during the workshop. It exists to let you experience the craft and the teaching. What You Will Not Find Here This is not a craft night. The atmosphere is focused and professional. Beatrice teaches the way she works: with precision, without shortcuts. Students who thrive here want to learn a discipline. That said, the community is warm. Graduates from 2012 still come to Open Studio sessions. Students become friends. The rigor and the warmth are not in tension. Practical Details All tools and materials provided. Wear comfortable clothing. 15 Clement Street, San Francisco, CA 94118. Street parking available. Muni serves the Inner Richmond. Book at heirloomleathercraft.com.
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