The Popular Science Monthly, Volume 98McClure, Phillips and Company, 1921 |
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Page 85
... hole as shown in Fig . 1 and then follow up with the large drill ; it is much easier to get a small drill through accurately and the large one will usually follow the small hole . This also causes less strain on the large drill , for ...
... hole as shown in Fig . 1 and then follow up with the large drill ; it is much easier to get a small drill through accurately and the large one will usually follow the small hole . This also causes less strain on the large drill , for ...
Page 124
... hole to the last and bore a 14 - in . hole all the way through the scantling so it will pierce the center of every large hole . Do this till every hole is pierced . This is for the bolt that holds the horizontal bar in its place ...
... hole to the last and bore a 14 - in . hole all the way through the scantling so it will pierce the center of every large hole . Do this till every hole is pierced . This is for the bolt that holds the horizontal bar in its place ...
Page 103
... holes of large diameter , 1⁄2 in . or more , the type of special drill shown in Fig . 1 will be found satisfactory . The cold- rolled rod upon which the cutting edge is mounted should be about 4 in . longer than the hole to be drilled ...
... holes of large diameter , 1⁄2 in . or more , the type of special drill shown in Fig . 1 will be found satisfactory . The cold- rolled rod upon which the cutting edge is mounted should be about 4 in . longer than the hole to be drilled ...
Contents
Manufacture Your Wrenches from Steel Tubing | 98 |
Copying Books by the MotionPicture | 104 |
Cutting Large Keyways by Hand | 110 |
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