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Just above each cutter's revolving wheel is suspended a funnel of wet sand, and this drops at intervals upon the turning disc and cools it; otherwise it would become so hot from the friction that it could not be used. After the design has been cut on the emery-wheel all its rough edges are smoothed off on a stone of much finer grain.
When he finally broke open his iron he found it a pudding stuffed with miniature black diamonds. When a fragment of the Canyon Diablo meteoric iron was polished in Philadelphia over fifteen years ago it cut the emery-wheel to pieces, and examination showed that the damage had been effected by microscopic diamonds peppered through the mass. How were those diamonds formed?
The coffee habit is as easily formed, and as remorseless, as the alcohol habit. After a while, if excessively used, it produces its sure result; your faculties have been sharpened by this intellectual emery-wheel until the edges begin to crumble. Your mind becomes dull; you pass your hand wearily over your eyes; you don't know what is the matter with you and say so.
"Do you cut any glass here?" "Oh, yes. Cut glass is made from the heavier crystal variety. The design is roughly outlined upon it in white and then the cutter places the part to be cut against an emery-wheel, which grinds out the grooves and figures and makes the pattern.
The cloth or marbled paper is afterwards pasted or glued to the sides of the book, and turned neatly over the edge of the boards. It may be added, that the edges of the boards, in binding nice books, are sometimes ground off on a swiftly revolving emery-wheel, giving the book a beveled edge, which is regarded as handsomer and more finished than a straight rectangular edge.
As Joyce lingered again and again to watch the swift and graceful shaping of the molten substance, while airy stem or globe were blown into being by the breath of man, to be afterwards carved into exquisite designs upon the emery-wheel, or graven against the spindle, all with a dexterity that seemed simply marvelous to her ignorance, she decided in her own mind that a master at glass working was not an artisan, but an artist.
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