A Bow Saw

Press, Volume LXXIII, Issue 22109, 3 June 1937, Page 3 (Supplement)

A Bow Saw

Make your own bow saw—it is simple to make. The wood used may be beech or mahogany, but failing to get these, mild dry jarrah will make quite as pice a job. Even German jacks and smoothing

brass of the handles. The centre of the holes (usually the brass is 5-18 in) should be 3m from bottom of the arm. The mortices should begin siin up from the bottom of the arm, and be the full width of cross-

planes have been made out of in r y r o h ther n ioS^lanes k Anlb with a a n Tit°tie e poTsha P nd they will look as smart as any you buy m the

, bar Make -nj dipped out clean to avoid injuring do to shafts jquara

To make the bow saw: First square up the two arms to lOin long by IJin by iin. The crossbar, if a lOin saw blade is going to be used, will be llin by Jin by iin. The straining piece will be Sin by iin by i in. Next join up the saw blade with the handles, which can be obtained at tool shops, by putting panel pins through the holes and measuring the distance between the shoulders of the handles. Tills will be somewhere about 12Jin. Deduct from this the width of the two arms in order to find the length of the cross-bar between the shoulders. Now set out the mortice and mark to take the

and true. The best way to do thi« is to fix the arms true in the bench screw. Bore half way through and then reverse the arms and complete the boring from the olhcr side- Tha brass should be only hand tight m these holes. Next make the tenons on the cross-bar, marking each to correspond with its mortice <C in Fig. 2) The shoulder could be slightly rounded as shown in Fig. 2, or made square. The rounded shoulder in this case is the best. Now shape the arms and crossbar. This can be done with a nair round rasp and glass paper. Having obtained a nice shape, round the edges slightly, as shown in the sections. The arms should be lett square at A (see Fig. 2). When all is nicely cleaned up give a taste of polish, and then join up the saw to the handles with panel pins. Bend the pins over so that they will not fall out. Next wind about ]oft of strong string round the top of the arms, and tie with a reer knot. Put the straining Pieces m between and twist until the blade is taut. Slip the straining piece down on to the cross-bar. And the saw is ready for use.