Peltilyöntötyöt

Peltilyöntötyöt refers to metalworking processes involving shaping sheet metal through various hammering and striking techniques. These techniques are fundamental in many manufacturing and crafting industries, from automotive production to artistic metalwork. The primary goal of peltilyöntötyöt is to alter the form, thickness, or surface characteristics of sheet metal without excessive material removal.

Common methods include planishing, which is used to smooth out hammer marks and create a uniform surface, and raising, where a flat sheet is gradually formed into a three-dimensional shape, such as a bowl or vessel, by systematically striking the metal around a form or anvil. Another technique is chasing, which involves using specialized tools to create decorative patterns or details on the metal surface. Repoussé is a related technique where the design is hammered from the reverse side, creating a raised, three-dimensional relief on the front. Metal spinning is also a form of striking, where a rotating disc of metal is pressed against a mold to form a symmetrical object.

The tools used in peltilyöntötyöt are typically hammers with various head shapes and weights, along with a range of anvils and stakes that provide support and shape to the metal during the striking process. The skill of the craftsperson lies in their ability to control the force and angle of the strike, as well as understanding the properties of the specific metal being worked. Different metals, such as copper, brass, aluminum, and steel, respond differently to these techniques, requiring adjustments in approach. Peltilyöntötyöt can be performed by hand or with the aid of power hammers and specialized machinery.