It can take some time to create jewellery using Repoussé and chasing, although with practice, complex and delicate pieces can be made which would be virtually impossible to complete using any other method. It takes a lot of time due to the repetition of a number of time-consuming stages: the preparation of a sheet by [...]
The techniques of repoussé date from Antiquity and have been used widely with gold and silver for fine detailed work and with copper, tin, and bronze for larger sculptures. Among the most famous classical pieces using this technique are the bronze Greek armour plates from the 3rd century BC. […]
Repoussé (French pronunciation: [ʀəpuse] or repoussage [ʀəpusaʒ] is a metalworking technique in which a malleable metal is ornamented or shaped by hammering from the reverse side. […]
Drawing is a metalworking process which uses tensile forces to stretch metal. It is broken up into two types: sheet metal drawing and wire, bar, and tube drawing. The specific definition for sheet metal drawing is that it involves plastic deformation over a curved axis. For wire, bar, and, tube drawing the starting stock is [...]
Blanking is a shearing process where a punch and die are used to create a blank from sheet metal or a plate. The blank is workpiece ejected from the starting stock. The process and machinery are usually the same as that used in piercing, except that the piece being punched out in the piercing process [...]
There are three basic types of bending on a press brake, each is defined by the relationship of the end tool position to the thickness of the material. These three are Air Bending, Bottoming and Coining. The configuration of the tools for these three types of bending are nearly identical. […]
Bending is a manufacturing process that produces a V-shape, U-shape, or channel shape along a straight axis in ductile materials, most commonly sheet metal. Commonly used equipment include box and pan brakes, brake presses, and other specialized machine presses. Typical products that are made like this are boxes such as electrical enclosures and rectangular ductwork. [...]
Competitiveness and price pressure in the injection molding industry has influenced many OEMs, molders and mold manufacturers to look for new ways to survive and thrive in their regional and global markets. […]
Step back for a moment and think about the voices we’ve been listening to over the past 10 years—what do you remember? Separate voices.Special interests have called for special considerations. Specific industries and associations and lobbyists represented their own interests—often with the best of intentions—that resulted in fractured, disjointed, poorly managed tactics that led to [...]
For years, the focus of mold base development has been toward providing a steel with higher mechanical properties for the user of the mold bases; however, when these higher strength alloys are used, machining has not been optimized for the toolmaker, […]