Woodwork for the grades, for use in manual training classes; fully illustrated with three hundred half-tone engravings from actual shop practice, and many working drawings of educational shop problems (1913)
Selden, Frank Henry · Chicago, Orr & Lockett Hardware Co · leaf 225
idth. If they are not, lookcarefully to find where the mistake is and rectify it ifyou can. Test the octagon by holding the trysquare the same as intesting a chamfer, Fig. 84. Any variations in the octagonwill show in the cylinder, therefore be particular about makingeach side of the octagon… … Fig. 308 Octagon larger the piece the more sides you can make with the planebefore it appears to be round. For small pieces, such asdowel rods, 16 sides is usually enough; for larger pieces youmay be able to make 64 or even 128 nicely formed surfaces.The longer you continue making regularly formed…
Woodwork
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
