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2. Blanking and piercing - Wikipedia

   en.wikipedia.org/wiki/Blanking_and_piercing

   Blanking and piercing. Blanking and piercing are shearing processes in which a punch and die are used to produce parts from coil or sheet stock. Blanking produces the outside features of the component, while piercing produces internal holes or shapes. The web is created after multiple components have been produced and is considered scrap material.

3. Punching - Wikipedia

   en.wikipedia.org/wiki/Punching

   Punching. Extruded holes with the punch and die used to create them. No pilot hole was used on the left. Punching is a forming process that uses a punch press to force a tool, called a punch, through the workpiece to create a hole via shearing. Punching is applicable to a wide variety of materials that come in sheet form, including sheet metal ...

4. Mandrel - Wikipedia

   en.wikipedia.org/wiki/Mandrel

   Look up mandrel in Wiktionary, the free dictionary. A mandrel, mandril, or arbor is a tapered tool against which material can be forged, pressed, stretched or shaped (e.g., a ring mandrel - also called a triblet [1] - used by jewellers to increase the diameter of a wedding ring), or a flanged or tapered or threaded bar that grips a workpiece to ...

5. Punch (tool) - Wikipedia

   en.wikipedia.org/wiki/Punch_(tool)

   A center punch is used to mark the center of a point. It is usually used to mark the center of a hole when drilling holes. A drill has the tendency to "wander" if it does not start in a recess. A center punch forms a large enough dimple to "guide" the tip of the drill. The tip of a center punch has an angle between 60 and 90 degrees. [1]

6. Press brake - Wikipedia

   en.wikipedia.org/wiki/Press_brake

   A press brake is a type of brake, a machine used for bending sheet metal and metal plate. [1] It forms predetermined bends by clamping the workpiece between a matching top tool and bottom die. [2] Typically, two C-frames form the sides of the press brake, connected to a table at the bottom and on a movable beam at the top. The bottom tool is ...

7. Stretching (body piercing) - Wikipedia

   en.wikipedia.org/wiki/Stretching_(body_piercing)

   Stretching (body piercing) Stretching, in the context of body piercing, is the deliberate expansion of a healed piercing for the purpose of wearing certain types of jewelry. Ear piercings are the most commonly stretched piercings, [1] with nasal septum piercings, tongue piercings and lip piercings / lip plates following close behind. [2]