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 of hardwood 2 by 4 by 12 in.  Round off the lower edge of each piece to fit an old skate.  Have a blacksmith bore holes through the top of the skates and screw one of them to each of the pieces of hardwood.

[Illustration:  Plan of Ice Boat]

These skates must be exactly parallel or there will be trouble the first time the craft is used.

Over the middle of the 6-ft. piece and at right angles to it, bolt the 8-ft. plank, leaving 1 ft. projecting as in Fig. 1.

The rudder skate is fastened to a piece of hardwood 2 by 2 by 12 in. as the runners were fastened.  This piece should be mortised 3 by 3 by 4 in. in the top before the skate is put on.  Figure 2 shows the rudder post.

A piece of hardwood 1 by 6 by 6 in.

[Illustration:  Details of Ice Boat Construction]

should be screwed to the under side of the 8-ft. plank at the end with the grain running crosswise.  Through this bore a hole 1-1/2-in. in diameter in order that the rudder post may fit nicely.  The tiller, Fig. 3, should be of hardwood, and about 8 in. long.