A Practical Hand book of Drawing for Modern Methods of Reproduction
A Practical Hand book of Drawing for Modern Methods of Reproduction
Charles G Charles George Harper
The book A Practical Hand book of Drawing for Modern Methods of Reproduction was written by author Charles G Charles George Harper Here you can read free online of A Practical Hand book of Drawing for Modern Methods of Reproduction book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Practical Hand book of Drawing for Modern Methods of Reproduction a good or bad book?
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The process of oxida- tion begins with an efflorescence, which may be best rubbed down with a thick stick of charcoal, broken across the grain. But zinc blocks are frequently ruined by carelessness in the printing-office after printing. When the printing has been done it is customary to clean type and blocks from the printing-ink by scrubbing them with a brush dipped in what printers call ** lye " — that is, a solution of pearl-ash^ — which, although it does not injure the leaden types, is apt ...to corrode the zinc of which most process blocks are made, if they are not carefully and immediately washed in water and dried. A block with its surface destroyed in this manner prints miserably, with a fuzzy appearance. The easiest way of protecting blocks from becoming oxidized is to allow the printing-ink to remain on them, or if you have none, rub them over with tallow. Examples will now be shown of the varying results obtainable from the same drawings by different pro- cesses. The drawing representing a Misty Day at Bolt Head was made upon common rough paper, such as is usually found in sailors' log-books ; in fact, it was a log-book Digitized by Google 42% DRAWING FOR REPRODUCTION.
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