A shorter course in woodworking; a practical manual for home and school . Fig. 42 Fig. 43 Every woodworking shop should have at least two or three straight-edges. Good sizes are about 4 long, 2| to 32 wide, V or | thick;and 8 or 10 long, 4 wide, and about i thick. For short work use theedge of the framing-square, or the try-square. Clear straight-grained i8 A Shorter Course in Woodworking white pine or mahogany is good for a straight-edge. Sometimes one be-comes curved. To test, mark a fine Hne by it, then turn it over and seeif the edge coincides with the line. The straight-edge is also used
A shorter course in woodworking; a practical manual for home and school . Fig. 42 Fig. 43 Every woodworking shop should have at least two or three straight-edges. Good sizes are about 4 long, 2| to 32 wide, V or | thick;and 8 or 10 long, 4 wide, and about i thick. For short work use theedge of the framing-square, or the try-square. Clear straight-grained i8 A Shorter Course in Woodworking white pine or mahogany is good for a straight-edge. Sometimes one be-comes curved. To test, mark a fine Hne by it, then turn it over and seeif the edge coincides with the line. The straight-edge is also used to determine whether a surface is straight or true. A sur- I l^P^^^i^^^^:^^ face is true only when a straight- Fig. 44 edge (in whatever position placed) will touch it surface may be smooth without being true. The board in Fig. 44is a true surface. Sight across it in any direction and the edges willbe in line and no point of the _ ^]^?^^^^ surface above or below the edges. On the other hand, when the board is warped as in Fig. 45, the Fig. 45 surface is wi
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorklondongpput
