126 



Home-Made Drill Press 



EVERY lathe owner knows what an 

 unsatisfactory job drilling in a lathe 

 is, and a great many cannot afford to 

 indulge their hobby to the extent of pur- 

 chasing a drill press. 



The following is a description of a 

 drill press which employs the ordinary 



A drill press made from an ordi- 

 nary round-shank breast drill 



round shank breast drill and two cast- 

 ings, the patterns of which were home- 

 made, as was also the drill tal)le, which 

 was turned in a foot-power lathe. 



The attractive feature of this drill 

 press is that the breast drill can be re- 

 moved in a few minutes' time and used 

 in the regular manner, and in the same 

 length of time it can be reassembled. 



To begin with, the breast drill must 

 be one of the round-shanked type, which 

 retail for about $1.50, and with a range 

 of from to 3^ inch drills. 



In the drawing may be seen the main 

 casting. The casting is very securely 

 fastened by screws to the bench. The 

 pattern should be made of ^-inch stock, 

 with the sides ribbed 54 inch so as to 

 give greater strength. The bearings at 



Popular Science Monthly 



the top and bottom should be cored a 

 sufficient size to be liberally babbitted. 

 The lugs are slotted with a hack saw and 

 drilled and tapped for adjusting screws 

 at the top and for a clamping bolt at the 

 bottom. 



The drill table is self-explanatory ; the 

 shank and surface being the only parts 

 that require machining. If the builde,r 

 has a lathe this can easily be done ; but 

 if not, a machinist will do the work at a 

 low cost. 



The feed lever is made of 3/16 x j^ 

 inch iron or cold-rolled steel. Two pieces 

 are hinged in an L form. The socket 

 for raising and lowering the drill is 

 made of pipe fitting, such as is used on 

 awnings, lapped for a set screw. 



To babbitt the casting a jig must be 

 used in order to align the table with the 

 drill properly. For this purpose pro- 

 cure a piece of steel of the same diame- 

 ter as the shank of the table. Turn down 

 one end sufficiently to be gripped in the 

 drill chuck, and with this rod it becomes 

 possible. 



How to Get the Most From a Football 



AS a rule the tube of a football blad- 

 der will crack oft" before the blad- 

 der is worn out. This is due to the 

 bending of the tube. 



A bicycle valve cap will protect the 

 stem and a pump may be used to bloA^ 

 up the football. 



To do this coat the outside of the 

 valve with shellac, being careful iiot 

 to let any get on the stem, and insert 

 ■ it in the tube. Wind a shoe string 

 around the outside of the tube to hold 

 it firmly against the valve. When the 

 shellac has set the shoe string may be 

 removed. 



c 



A Help in Wire-Twisting 



UT a notch in the center of a screw 

 driver blade, about 1/16" deep, a:s 



A notch in a screw driver gives a 



grip on wires to be twisted around 



binding posts or sockets 



shown in the sketch. This will be found 

 •of great aid in bending wires around 

 binding posts or sockets. 



