Hand-Cut (Trincetto)

What is Hand-Cut (Trincetto)

Hand-cutting with a trincetto is one of the fundamental techniques of Italian artisanal leather craftsmanship, particularly in Milanese manufacturing. The trincetto is the traditional tool—a curved, sharp blade mounted on a wooden or bone handle—used to engrave and shape leather with total control, following a previously drawn pencil mark or directly by sight based on the master craftsman's experience.

This technique is rooted in the medieval tradition of Milanese guilds and maintains its validity in contemporary luxury leather goods. Unlike mechanical rotary cutting or industrial punching, the trincetto allows for real-time adjustment of the incision thickness, cutting depth, and shape geometry, reacting to the microscopic characteristics of the leather's grain and texture.

In the context of watch straps, hand-cutting represents the artisan's signature: every lug, every edge, every rib carries the personal imprint of the person who guided the blade through the material. It is not mere aesthetic neatness, but constructive language.

Features and Properties

Hand-cutting is distinguished by a set of properties that differentiate the finished product from industrial processing:

Tactile and Visual Properties: Hand-cutting preserves the softness of the leather surface because the trincetto, when properly handled, does not compress the grain or brutally remove material. The ribbing of the cut remains slightly irregular—this is not a defect, but a trace of awareness. The raw edge, if made from vegetable-tanned leather, absorbs natural air humidity and develops a patina that darkens over the years, creating a chromatic contrast that tells the story of the item's use.

Mechanical Resistance: A hand-cut strap made from quality leather—especially if vegetable-tanned—maintains its structural integrity indefinitely if properly stored. The initial softness does not compromise the fiber's resistance: on the contrary, vegetable-tanned leather naturally hardens with age, improving resistance to creasing and tearing.

Use in Watch Straps

In the context of watch leather goods, hand-cutting with a trincetto is used to create straps with the following characteristics:

Lug and Loop: The lug (the main body that wraps around the wrist) is hand-cut to ensure uniform thickness and edges that adapt to the wearer's individual comfort. This is particularly critical for classic or vintage watches, where the dimensions of the deployant clasps and buckles vary from modern standards.

Ribbing and Decorative Details: Parallel ribs, side ridges, and geometric details are incised with the trincetto following a pencil line or freehand. This practice transforms the strap from a simple functional tool into a recognizable design element, often identifying the artisan's craftsmanship. A Milano Straps strap often features parallel ribs that echo the aesthetic code of Milanese leather goods.

Adaptation to the Deployant Clasp: Since each watch has its own deployant clasp dimensions (the metal buckle), the artisan who hand-cuts can adjust the exact length of the lug, the width of the loop, and the position of the locking rib in real-time, eliminating the need for stock of pre-sized straps.

Stylistic Pairings: Hand-cutting allows the strap to be paired with watches from any era: from vintage Marine Nationale to modern-day Seikos, from Rolex Submariners to Patek Philippe Calatravas. The softness of manually cut leather visually adapts to elegant, sporty, or dive watch dials, thanks to the natural detail of the raw edge and the patina developed over time.

Compatible watch models: Rolex Submariner, Omega Seamaster, Tudor Black Bay, IWC Portofino, Patek Philippe Aquanaut, Seiko SKX, Zenith El Primero, Universal Genève Polerouter, Jaeger-LeCoultre Reverso, Tudor Prince—practically any watch with bayonet or standard lugs from 16 mm to 24 mm in width.

Maintenance and Care

Storage: A hand-cut vegetable-tanned leather strap does not require special treatments if stored in a dry environment (40-50% relative humidity). Avoid prolonged direct UV exposure, which accelerates surface oxidation not negatively, but unpredictably.

Regular Cleaning: Use a soft, slightly damp cloth with distilled water. Gently wipe the strap to remove dust and residues. Once every 3-6 months, apply a drop of pure linseed oil or leather balm with beeswax (not synthetic silicones): massage in a circular motion for 2-3 minutes and allow to air dry horizontally.

Protection from Liquids: Although vegetable-tanned leather is naturally hydrophobic, prolonged immersion in water or contact with salty sweat requires quick drying. After contact with fresh water, dry with a soft cloth and allow to ventilate for 30 minutes before storing. For saltwater or chlorine, wash immediately with distilled water and dry.

Mindful Aging: A hand-cut strap naturally develops a golden or brownish patina that is part of its beauty. Do not attempt to unify this patina with excessive waxes or oils: the natural process is the desirable one. If you wish to accelerate aging, moderate exposure to sunlight (2-3 hours per month) intensifies the patina without structural damage.

Discover Milano Straps hand-cut (trincetto) straps — Milanese craftsmanship, shipped in 48h. For a custom strap, visit the Casati Milano atelier in Via XX Settembre 15, Milan — by appointment.