outside of the casing, and pins inserted, as shown in Fig. 5.
Solder is run around the outside pin to keep the steam from
escaping. At the lowest point of the saucer or casing a 1/8-in.
hole is drilled to run off the water. A wood plug will answer for
a stopcock.

If metal dishes, shaped from thick material with a good coating of
tin, can be procured, it will be much easier to construct the
casing than if enameled ware is used. The holes can be easily
drilled and the parts fitted together closely. All seams and
surfaces around fittings can be soldered.

Nozzles are made of two stopcocks having a 1/8-in. hole. These are
connected to a 3/8-in. supply pipe. The nozzles should be set at
an angle of 20 deg. with the face of the disk. The nozzle or
stopcock will give better results if the discharge end is filed
parallel to the face of the disk when at an angle of 20 deg. There
should be a space of 1/16 in. between the nozzle and the blades to
allow for sufficient play, Fig. 3.

The bearings are made of 1/4-in. brass and bolted to the casing,
as shown, with 1/8-in. machine screws and nuts. Two nuts should be
placed on each screw. The pulley is made by sliding a piece of
steel pipe on the engine shaft and fastening it with machine
screws and nuts as shown in Fig. 6. If the shaft is square, lead
should be run into the segments.

The driven shaft should have a long bearing. The pulley on this
shaft is made of pieces of wood nailed together, and its
circumference cut out with a scroll saw. Flanges are screwed to