spotfacer
Tool, guided by a pilot, used to machine a recess around a hole.
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Glossary Terms
spotfacing
Similar to counterboring except that, in spotfacing, material around the original hole is cut. Application example: the recessed area into …
statistical quality control (SQC)
Statistical techniques to measure and improve the quality of a given process.
stainless steels
Stainless steels possess high strength, heat resistance, excellent workability and erosion resistance. Four general classes have been devel…
static stiffness
Relates to the machine tool and is measured in pounds per inch. Static stiffness indicates how many pounds of force it takes to deflect the…
steady rest
Supports long, thin or flexible work being turned on a lathe. Mounts on the bed’s ways and, unlike a follower rest, remains at the point wh…
steel
Basically, iron in combination with carbon and other elements. There are five major groups of steels: carbon steel, alloy steel, stainless …
steel-specification number
System of numbers developed by the American Iron and Steel Institute and Society of Automotive Engineers to identify steel. The first two d…
steep-taper toolholder
Common method of securing the cutting tool body to the spindle in a machine tool. Comes in various styles, including CAT V-flange, British …
step-over
Distance between the passes of the toolpath; the path spacing. The distance the tool will move horizontally when making the next pass. Too …
metal stereolithography
Process similar to plastic stereolithography but uses powder metal to build up the part. See stereolithography, plastic.
plastic stereolithography
Process that uses a combination of lasers and photosensitive, liquid plastics to generate models. The desired workpiece is electronically “…