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The surface finish of castings can be as critical to quality as for any precision surface. Yet, finish requirements in the industry are often ill defined, loosely referencing RMS roughness

Most surface finish specifications for plastics refer to an SPI finish (SPI mold finish). These numbers refer to a standard set of finishes for injection molded parts set by the

Download this article as a PDF Companies regularly need to replace metal components with plastics for reasons of weight, cost, performance, corrosion, etc. Very often, however, when the material is

Registration is open for the new one-day Surface Metrology and Tribology class, which will be held in Livonia, Michigan, Nov. 14, 2024. The full-day metrology class – tribology class offers

In plastic molding, parting lines can form on the component where portions of the mold meet imperfectly. These ridges and/or valleys may lead to several types of functional problems with

In the molding process, knit lines form where the material does not weld together seamlessly as it moves through the tooling. The cause may be related to the mold surface,

3D optical profilers provide high-resolution measurement of surface roughness and shape. Earlier optical profilers were limited by the size of their measurement areas (Field-of-view, or FOV), typically less than 1mm

Download this article as a PDF In the early days of 3D optical profiling, we needed to know an alphabet soup of measurement modes in order to operate the systems.

Michigan Metrology opened its doors in the Detroit area in 1994. I’d spent the previous several years working with the team at WYKO, developing the ”white light interferometry” technology that enables

Lighting and automotive lighting applications require more complex lens shapes and textures. To support these high-performance designs, manufacturers are pushing the boundaries of plastics, and the molds required to make