alapuikko

Alapuikko is a Finnish term meaning "lower needle". It refers to a needle-like component positioned below a counterpart called yläpuikko (upper needle) in certain machines and devices. The concept is most common in textile-related equipment, such as sewing and embroidery machinery, but appears in other contexts as well.

In practice, the alapuikko acts as the lower operating element in a two-needle arrangement. Its timing and alignment with the upper needle determine stitch formation, loop control, or thread guidance, depending on the machine's design. Because manufacturers use different geometries, the exact role of the alapuikko can vary between models.

Construction and maintenance: These needles are usually made of hardened steel or alloy with precisely ground tips. Regular maintenance includes cleaning, lubrication, and periodic replacement when worn or bent. Correct alignment with the yläpuikko is essential for stitch quality and machine reliability.

Etymology and usage: The term is a compound of ala ("lower") and puikko ("needle") in Finnish. It is mainly used in Finnish technical literature, manuals, and repair guides. In other languages the component is typically described more generically as the "lower needle" or by the device's specific name.