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In manufacturing, an undercut is a special type of recessed surface that is inaccessible using a straight tool. In turning , it refers to a recess in a diameter generally on the inside diameter of the part.
Undercut created during welding. In welding, undercutting is when the weld reduces the cross-sectional thickness of the base metal. This type of defect reduces the strength of the weld and workpieces.
An example of a turned part with and without an undercut On turned parts an undercut is also known as a neck or "relief groove". They are often used at the end of the threaded portion of a shaft or screw to provide clearance for the cutting tool, and also referred to as thread relief in this context.
A simple example of molding an external undercut In molding , an undercut is an indentation or protrusion in a shape that will prevent its withdrawal from a one-piece mold. Undercuts on molded parts are features that prevent the part from being directly ejected from an injection molding machine .
Undercut procedure, a procedure for fair allocation of indivisible objects. Undercut (boxing), a type of boxing punch; Undercut, a stunt people film; Undercut (hairstyle), a type of hairstyle; Undercut (manufacturing), a recess that is inaccessible using a straight tool; Undercut (welding), a defect that reduces the strength of a weld
An isotropic etchant that creates an undercut An anisotropic etchant leaves no undercut Undercuts from etching (microfabrication) are generally an unwanted side effect, [ citation needed ] however are sometimes used as a feature such as in the Niemeyer–Dolan technique . [ 1 ]
Since both A and B know this, they will each try to undercut their competitor until the product is selling at zero economic profit. This is the pure-strategy Nash equilibrium . Recent work has shown that there may be an additional mixed-strategy Nash equilibrium with positive economic profits under the assumption that monopoly profits are infinite.
For example, the equations = = form a parametric representation of the unit circle, where t is the parameter: A point (x, y) is on the unit circle if and only if there is a value of t such that these two equations generate that point.