käsikäärid

Käsikäärid, which translates to "hand shears" or "secateurs" in English, are a type of hand-operated pruning tool. They are primarily designed for cutting small branches and stems of plants, making them an essential tool for gardeners, horticulturists, and vineyard workers. The design typically involves two blades that pivot against each other, similar to scissors, but with a more robust construction to handle woody material.

There are several main types of käsikäärid. Bypass secateurs are the most common, with two curved blades that pass by each other, creating a clean cut that heals well. Anvil secateurs have a sharp blade that closes onto a flat surface (the anvil), which is better suited for cutting dead wood but can crush living stems. Ratchet secateurs are designed for users with less hand strength, employing a mechanism that allows for gradual pressure application, cutting through thicker branches in stages.

The material of the blades is crucial for performance and durability. High-carbon steel is often used for its hardness and ability to hold a sharp edge, while stainless steel offers better rust resistance. Ergonomics also play a significant role in käsikäärid design, with padded or contoured handles intended to reduce fatigue and improve grip during prolonged use. Proper maintenance, including cleaning and sharpening, is vital for ensuring the longevity and effectiveness of these pruning tools.