Glossary of laser cutting terms - R. From Tesko Laser, providing laser cutting and metal fabricating services. Tesko Laser Division - photos
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Glossary of laser cutting terms - R



The return of light waves from a surface (mirror). See Reflectivity.


The measure of a materials' reflection of laser light. Highly reflective materials like copper and aluminum alloys are difficult to cut requiring reduced work speeds. See Reflection.


Deflection from a straight path, undergone by a light ray or energy wave, in passing obliquely from one medium (like air) into another (like glass) in which its velocity is different.

Repeatability Tolerance

Measures the ability of a CNC controlled machine, like a laser cutter, to repeat the exact part positioning or cutting pattern within the stated amount of variance for each part placement or cut. The smaller the repeatability tolerance, the more uniform the cut parts will be. Often measured in ten-thousandths of an inch or even in microns — hundred-thousandths of an inch. See Positioning Tolerance.

Rockwell C

A scale or test used to define hardness in metals, particularly steel and titanium.


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