Climbing Holds Technical Details
Climbing Holds Materials
The primary materials used in manufacturing climbing holds are polyurethane PU and polyester resin PE. Each material offers distinct characteristics affecting durability weight texture and cost. Polyurethane holds are generally lighter more resistant to impact and less prone to chipping. They often feature a slightly softer feel which can be more comfortable for climbers especially during extended sessions. Polyurethane is also known for its consistent texture and vibrant color retention over time. Polyester resin holds, while often more cost-effective, are typically denser and more brittle than polyurethane. They can be very durable but may be more susceptible to impact damage or chipping if dropped or mishandled. Both materials are formulated to be UV resistant and suitable for indoor and outdoor use, though specific outdoor ratings vary by manufacturer.
Some specialized holds or volumes may incorporate fiberglass or wood for specific structural properties or aesthetic appeal. Fiberglass volumes offer large, lightweight, and extremely strong structures that can drastically alter the climbing surface, allowing for complex three-dimensional route setting. Wood holds, often crafted from hardwoods like maple or birch, provide a distinct natural feel and are favored for their skin-friendly texture during intense training for finger strength.
Types of Climbing Holds
Climbing holds are categorized by their shape and the type of grip they require. This variety allows route setters to create diverse challenges and movements. Jugs are large, positive holds that offer excellent grip, ideal for beginners, warm-ups, or resting points. Crimps are small, shallow edges that require significant finger strength and precise finger placement. Slopers are rounded holds with no positive edges, demanding open-hand strength, body tension, and friction to maintain grip. Pinches are holds designed to be gripped between the thumb and opposing fingers, building specific hand strength. Pockets are holes of varying depths, typically accommodating one, two, or three fingers, focusing on isolated finger strength.
Other types include volumes, which are large hollow structures bolted to the wall that change the climbing angle and can have holds mounted onto them, adding complexity to routes. Footholds are smaller, less positive holds primarily intended for foot placement, essential for developing precise footwork. Each type of hold contributes uniquely to a route's difficulty and character, challenging different muscle groups and climbing techniques.
Mounting Systems and Installation
Climbing holds are predominantly secured to walls using one of two primary mounting systems: bolt-on or screw-on. Bolt-on holds feature a central hole designed to accept an M10 bolt, which threads into a T-nut installed flush with the back of the climbing wall panel. This system is the most common for main holds as it allows for secure attachment, easy repositioning, and robust weight bearing. T-nuts are typically pressed or screwed into pre-drilled holes in the wall panels, ensuring a strong anchor point for the bolts.
Screw-on holds are smaller and are designed to be attached directly to the climbing surface using multiple wood screws. These are often used for smaller footholds, adding texture, or filling gaps where bolt-on holds cannot fit. While less robust than bolt-on holds, screw-on holds offer flexibility in placement and are useful for detailed route setting. When installing either type, proper torque for bolts and appropriate screw length for screw-on holds are crucial to ensure safety and prevent hold spinning or breakage.
Texture and Ergonomics
The texture of a climbing hold is a critical factor influencing grip, comfort, and skin wear. Holds are designed with varying degrees of coarseness, from smooth to very gritty, to provide optimal friction without being overly abrasive. A good texture balances grip effectiveness with minimizing skin damage over long climbing sessions. Ergonomics refers to the design of the hold's shape to fit the human hand or foot comfortably and naturally, reducing strain and injury risk. Well-designed holds distribute pressure evenly across the gripping surface and accommodate various hand sizes. Manufacturers often focus on creating shapes that promote natural hand positions and movement patterns, enhancing the climbing experience and facilitating strength development without causing undue stress on joints or tendons.