A shorter course in woodworking; a practical manual for home and school . circular-saw ma-chine will do in ordinary cases, and there are many independent b o r i n g-machines made. Their use is easily Mortising- machines are in common use, and are often drivenThe principle is similar to that of cutting mortises byhand, but the work can be done more easilyand quickly (Fig. 283—Barnes). 100. Tenoning-machines (—Barnes)also save time and labor. See also page Sandpapering machines, throughwhich boards are run as through a planer,give a smooth and even surface (thoughusu
A shorter course in woodworking; a practical manual for home and school . circular-saw ma-chine will do in ordinary cases, and there are many independent b o r i n g-machines made. Their use is easily Mortising- machines are in common use, and are often drivenThe principle is similar to that of cutting mortises byhand, but the work can be done more easilyand quickly (Fig. 283—Barnes). 100. Tenoning-machines (—Barnes)also save time and labor. See also page Sandpapering machines, throughwhich boards are run as through a planer,give a smooth and even surface (thoughusually not to be compared with that pro-duced by a scraping-machine) but the gritquickly dulls tools used afterwards. Simplemachines, shaped like a drum or a diskcovered with sandpaper, against which thewood is held, have long been in use and caneasily be contrived—also sanded belts forrounded surfaces. 102. The Lathe.—Most woodworkingj^., machines are of recent invention, but thelathe in its primitive forms dates fromFig. 283 antiquity. Woodturning is a trade in. Common Tools and Their Uses III itself, and is much better learned fromperienced tiirner than from a book. Allhowever, understand the generaland the elementary operations, whichincluded in a general requires concentrated at-tention and freedom from interrup-tion, both on account of the workand to avoid accident. Differentturners frequently have differentways of doing work and there ismuch opportunity for thought inso handling the tools as to do thecleanest and best work in the leasttime. Therefore carefully observethe effect of holding the cuttingedges in different positions so as tolearn to do as much clean cutting,and as little scraping, as possible. a practical and ex-woodworkers should,principles of turningare all that can be
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