< Detail Work 1 >
This is final stage 'detail work', for which
I need more several months. First, I prepared
air compressor. In LIVESTEAM magazine, 'Kozo'
explained how to make it from scratch. I
adopted almost the same process as Kozo's.
The upper steam cylinder was made from 25mm
brass round bar. A round bar bush for tubing
was silver soldered in it. The offset hole
for the bar was started with a slit endmill,
then drilled through.
The lower air cylinder was also made from
brass round bar. Radiator fins were cut with
a home made parting tool. Before parting
off, a recess for valve chest was sawn out
and finished with an endmill.
The fins have a longitudinal partition at
center. It was made from a thin brass square
bar, silver-soldered into a silted channel
in the pump body, then finished with files.
Air valve chest behind the air cylinder was
made from a brass flat bar with milling and
filing. It was screwed and glued onto the
cylinder.
The medium part was turned from the same
round bar. The front window was opened with
a slit endmill.
The three parts were assembled with M1.7
brass screw. Also top and bottom surfaces
have dummy screws. I prepared a jig for drilling.
The stem was made from free-cutting stainless
steel bar.
The steam valve was turned from brass round
bar and silver soldered. Note a small screw
to fix the part, which would be filed off
after soldering.
Holder for the compressor was made from mild
steel angle. Note the vertical bolting face
was trued up.
The compressor was finished. The additional
parts (strainer, elbow, governor) will be
explained in the next month.
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