Mech. [See quot. 1879.] pl. Indentations or marks made on a surface by the vibration or too great pressure of a tool.
1853. O. Byrne, Artisan’s Handbk., 351. Excessive pressure … only fills the work with furrows, or produces an irregular indented surface, which by workmen is said to be full of utters.
1879. Holtzapffel, Turning, IV. 342. Fine lines or striæ, also called ‘utters,’… from the sound emitted by the work when in vibration against the tool.
