g into

[Illustration: Fig. 3]

wood too rapidly. One inch from the outer end of the crank block,
Fig. 5, bore a 3/16-in. hole, and force a 1/4-in. bolt to cut its
thread in the wood. This is a set screw to hold the crank in any
position desired. Place a strap nut, threaded to fit the crank, on
the head-end of the crank block, and a plain nut to act as a
bearing, on the crank end. One and one-half inches from the back
of the tail-piece bore a 3/8-in. hole. Make a peg 3/8 by 2 in. To
put in a piece of wood to turn, move the tail-piece back until the
head end is over the center of the hole nearest the end of the
block, then the peg will slip into second hole from the head end
of the tail-piece, and into a corresponding T-rail hole, pinning
the two together. Insert wood and screw up dead center to hold it.

For a tool rest make a second piece like the base of the
tail-piece, 11 in. long and fitting the small T-rail. Cut out two
blocks 1-1/2 by 2-1/4 by 3/4 in. and screw them, one on each end
of the base of the tool rest, covering the half farthest from the
centers, and having an 8-in. space between blocks. On the tops of
these blocks screw a strip 11 by 2-1/4 by 3/4 in. Now for the rest
proper, cut out a board 8 by 11/16 by 9 in. to slide in the slot
of the rest. Take a piece of oak 11 by 2 in., and high enough so
that the top will be level with the centers of the lathe, and
bevel as shown in Fig. 6. Screw on one end of the 8 by 9-in. piece
exactly in the middle. This piece will slide in and out, closer or
farther from the centers as desired, and also along the T-rail.

A center for turning rosettes, saucers, etc., may be made as
follows: Remove the spur center and bolt in its place a 1-in.
circular board of the same

[Illustration: Fig. 5]

diameter, using longer 3/16-in. stove bolts with heads
countersunk. Rotate the lathe, and with a gimlet bore a hole at
the exact center and through the board. Now take off the board and
countersink on the back a place for the head of a coarse threaded
screw. Turn in a 1-3/4 -in. screw, replace the board and any block
held on the end of the rotating screw will turn on and be held
while being turned.
--Contributed by L. L. Winans, Mexico, Mo.

** Reversing Small Battery Motor [405]

Make the switch out of a piece of slate (for the base) two strips
of brass, a rubber strip and handle and some binding-posts from
old dry batteries. Fasten the brass strips at 5 and 6, Fig. 1,