Fettling

Part of speech: verb

Definitions

1. The process of removing excess material or imperfections from metal castings after molding ; the act of making small adjustments or improvements to machinery or equipment for optimal performance
2. Cleaning and smoothing rough edges or defects from cast metal objects ; carefully modifying mechanical parts or settings to achieve better function
3. Finishing cast metal items by trimming flash and cleaning surfaces ; fine-tuning devices or systems to enhance operation and efficiency

Etymology: The word's surprise is in its core sense: "fettle" once meant a belt or girdle. Old English "fetel" named a belt, and the Old English participle "ġefetelsod" meant "provided with a belt," which shifted toward "trimmed, polished, ornamented." Dressing something up and putting it in order led to the idea of getting it into fit condition, so a person or machine could be "in fine fettle." Medieval English then stretched the verb "fetlen" across a remarkable range: to prepare, to gird oneself for battle, to shape, even to be about to do something. Its ultimate origin is uncertain. It may come from Old English "fetel" and a Proto-Germanic root for belt, or from Old English "fetian," meaning "to fetch," which traces back to a Proto-Indo-European root for "foot." Dictionaries cannot settle which. The foundry sense, trimming flash from cast metal, is a specialised descendant of that idea of making something neat and fit for use, and the engineering sense of tuning a system follows the same path.

Synonyms: repairing, mending