Handy man's workshop and laboratory . Fig. 118—Method of sawing holes in metal inch pipe tap through cast iron y% inch thick in a gas engine bedin forty minutes with an ordinary carpenters brace to revolve the cutter, after a hole hadbeen drilled for the centerpin to follow. This tool willdo larger work more easilythan will a ratchet drill ifnot much thickness ofmetal is to be cut through.—6 DEVICE FOR FINDINGCENTERSOF ROUND WORKThis little device if care-fully made will enable oneto accurately determine thecenters of round bars,disks, and in fact any ob-ject of a circular form. A Fig. 119-Dev
Handy man's workshop and laboratory . Fig. 118—Method of sawing holes in metal inch pipe tap through cast iron y% inch thick in a gas engine bedin forty minutes with an ordinary carpenters brace to revolve the cutter, after a hole hadbeen drilled for the centerpin to follow. This tool willdo larger work more easilythan will a ratchet drill ifnot much thickness ofmetal is to be cut through.—6 DEVICE FOR FINDINGCENTERSOF ROUND WORKThis little device if care-fully made will enable oneto accurately determine thecenters of round bars,disks, and in fact any ob-ject of a circular form. A Fig. 119-Device for finding centers PieCe of 3/l6-inch square of round work brass rod about 8 inches. HANDY MAN S WORKSHOP AND LABORATORY IOI long is bent to form approximately a right angle, both legsbeing of equal length. A strip of brass, A, about }i inch wideand 1/16 inch thick is soldered to the ends of the between points X Y make a mark b. Another brassstrip B of same size as A is soldered in place as shown, beingcareful to have edge C exactly on the line b and over the angle 119 shows method of using the device. Simply place it onthe end of the bar or shaft; make a mark with a scratch awl;give a quarter turn, and make another mark. The intersection ofthe lines will give the exact center.—86 HANDY METHOD OF FINDING THE CENTER OF A SHAFT In Fig. 120 the circle represents asection of a shaft, the center of whichit is desired to find. The corner ofa square is placed on any point of thecircumference. The points A and Bare the intersections of the outer sidesof the square with the a line from A to B. Now shiftthe square a little, as repres
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Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectworkshoprecipes
