Self-Help Mechanical Drawing: An Educational Treatise
Self-Help Mechanical Drawing: An Educational Treatise
Hawkins, N. (Nehemiah), 1833-
The book Self-Help Mechanical Drawing: An Educational Treatise was written by author Hawkins, N. (Nehemiah), 1833- Here you can read free online of Self-Help Mechanical Drawing: An Educational Treatise book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Self-Help Mechanical Drawing: An Educational Treatise a good or bad book?
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The board is then inclined and left to dry slowly ; make sure that the paper is all well pasted and every part of the edges attached to the board. If tracings are required to be tinted or shaded, the color may be applied before the tracing is cut off, or what is more usual, the color may be applied on the back of the tracing ; then there is no liability to wash out the lines. Hawkins' Mechanical Drawing. 185 Mechanical drawiiigs are seldom tinted, but are tnainly.produced in India ink. Where, h...owever, a fine effect is desired, working drawings are colored, so as to show at a glance the material of which the different parts are to be made. The colors required are few but should be of the best quality. Besides India ink the following water- colors are generally used : I, Neutral-tint. 2, Prussian Blue. 3, Chrome Yellow. 4, Gamboge. 5, Raw Sienna. 6, Carmine. 7, Vermillion. 8, Venetian Red. 9, Sepia. 10, Indigo. These come in hard cakes. Certain colors and tints represent different metals and materials as follows : Wrought Iron — Prussian Blue.
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