Boring

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Boring

 

(in Russian, rastachivanie), a mechanical process for machining interior surfaces by boring (cutting) tools in order to increase the diameter of a hole. Boring is done on lathes, boring machines, and other metal-cutting machines. It is possible to machine blind and through holes, both cylindrical and conical, as well as grooves and slots. Boring yields a machining precision of classes 4 or 5 and a surface roughness of classes 2 or 3.


Boring

 

(in Russian, rassverlivanie), mechanical working of an existing hole with a drill in order to increase the diameter. It is done either by machine, using drilling and boring machines, lathes and other metalcutting machines, or by hand, using pneumatic or electric drills. The precision achieved is of the fourth to fifth class, and the surface roughness is of the second to third class.

boring, borehole

A hole drilled in the ground to obtain soil samples for evaluation and to obtain information about the strata.
References in periodicals archive ?
CABIN FEVER 2 18 More horror and, boringly enough, it happens on prom night.
Wouldn't it be nice to be told those sort of things rather than the boringly predictable?
The drab greys and brown of the (to a native of West Yorkshire) boringly flat East Yorks have been transformed into gigantic dynamic works of brilliant purples, oranges, greens and blues, more reminiscent of Gaugin's Tahiti than the Wolds' Tibthorpe.
You're starting to repeat yourself and become boringly predictable.
And there was no real sense of panic as the passengers proceeded in a boringly orderly fashion to too few lifeboats.
Important decisions would, of course, be taken elsewhere, probably in a re-opened Mike's Bar at the civic offices, a place unforgivably closed by the current administration who boringly plan to use it as offices.
EVERY spread firm has its own clutch of what buzzword-mad businessmen boringly call unique selling points, writes Bruce Millington.
This is America and our transitions of power are usually boringly uneventful.
So what can a boringly normal suburban family do when it comes to perking up life to be less ordinary?
We are also talking about a boringly garden-variety uniquely American tradition that starts with Ben Franklin.
It works well, if a little boringly, and could doubtless be projected everlastingly eastwards in the same pattern.
William Kate, drum for the Windsor, boringly as the Naturally the lower orders will always turn out to see these people - that's because the British gawpergene is over-developed.