Mechanical Drawing Self-Taught

"M echanical Drawing Self-Taught" by Joshua Rose is a practical instructional manual written in the late 19th century. The book serves as a self-learning guide aimed at beginners in mechanical drawing, providing insights into the selection and use of drawing instruments, along with fundamental principles of geometry and mechanical design. The focus is on hands-on examples that machinists encounter in their daily work, making it highly applicable for those seeking to develop their skills in this field. The opening of the text outlines the author's purpose of empowering novices to create mechanical drawings independently, without requiring an instructor's guidance. It explains specialized techniques such as the detailed stepby-step processes for using drawing tools, emphasizing the importance of practicing with smaller drawings to build skill and confidence. Rose effectively underscores that familiarity with drawing instruments is the key to mastering mechanical drawing, preparing the reader for the practical examples that follow throughout the work.A Drawing Board should be of soft pine and free from knots, so that it will easily receive the pins or tacks used to fasten down the paper. Its surface should be flat and level, or a little rounding, so that the paper shall lie close to its surface, which is one of the first requisites in making a good drawing. Its edges should be straight and at a right angle one to the other, and the ends of the battens B B in Figure 1 should fall a little short of the edge A of the board, so that if the latter shrinks they will not protrude. The size of the board of course depends upon the size of the paper, hence it is best to obtain a board as small as will answer for the size of paper it is intended to use. The student will find it most convenient as well as cheapest to learn on small drawings rather than large ones, since they take less time to make, and cost less for paper; and although they require more skill to make, yet are preferable for the beginner, because he does not require to reach so far over the board, and furthermore, they teach him more quickly and effectively. He who can make a fair drawing having short lines and small curves can make a better one if it has large curves, etc., because it is easier to draw a large than a very small circle or curve. It is unnecessary to enter into a description of the various kinds of