th a square;
and drill it entirely through. Find the centers of the insides of
the other two castings, and drill them in the same manner.

A piece of mild steel 5 in. long, and 3/8-in. in diameter must now
be obtained. This is for a shaft. Commencing 1-1/2 in. from the
one end, file the shaft off flat for a distance of 1 in. Then cut
a slot in the paddle-wheel, and place the shaft inside of the
paddlewheel, with the flat part of the shaft turned to face the
slot in the wheel. Pour metal into the slot to key the wheel on to
the shaft.

The paddle-wheel is now ready to be fitted inside of the casing.
It may be necessary to file some of the ends off the paddles, in
order to let the paddle-wheel go into the casing. After it is
fitted in, so that it will turn easily, place the entire machine
in a vise, and bore three 1/4-in. holes, one in the lug, one in
the projections, B, b, and the other in the base, as shown by the
black dots in Fig. 6. Also bore the port-hole in projection B, and
the exhaust hole in projection b, and two 1/4-in. holes at d, d,
Fig. 6. Cut out a piece of gasket and fit it between the two
castings. Then bolt the castings together, screw down, and connect
to the boiler.

[Illustration: Using the Brace]

The reader must either cast a pulley out of babbitt metal, or else
go to a machinist and get a collar turned, with a boss and a set
screw, and with three small screw holes around the edge. Cut out a
small wood wheel and screw the collar fast to it, fasten it to the
shaft of the turbine and turn on the steam. Then take a knife or a
chisel, and, while it is running at full speed, turn the wheel to
the shape desired.

Your turbine engine is now ready for work, and if instructions
have been carefully followed, will do good service.

** Painting A Car [357]

When painting the automobile body and chassis be sure to stuff the
oil holes with felt or waste before applying the paint. If this
caution is not observed the holes will become clogged with paint
which will prevent any oil reaching the bearing.

** How To Build An Ice Boat [357]

The ice boat is each year becoming more popular. Anyone with even
small experience in using tools can

[Illustration: A Four-Runner Ice Yacht]

construct such a craft, and the pleasure many times repays the
effort.

Take two pieces of wood 2 by 6 in., one 6 ft. and the other 8 ft.
long. At each end of the 6-ft. piece and at right angles to it,
bolt a piece