< Lagging & Cleading >
The drawing shows a section of boiler lagging
and cleading. The lagging is too soft to
squeeze with boiler bands, so it needs spacers
under the boiler bands.
The spacers were made of aluminum band plate.
As the picture shows, they were winded around
the boiler barrel and squeezed with stainless
steel wire.
The lagging is made of 'Kaowool' 2mm paper.
Thin stainless steel wire secures the lagging
permanently.
The boiler cleadings were cut from 0.5mm
brass sheet. You can scribe two lines of
0.5mm pitch and saw between the lines. Note
a suitable illumination highlights the scribed
lines. Illumination is important for such
a work.
Small holes for small bushes were opened.
The picture shows a milling operation for
a hole of safety valve. After that I rolled
up the sheet around a large steel tube. However,
as a result, the sheet around the hole was
distorted and it took long time to repair.
I have to say that any hole on the cleading
should not be opened before you roll up the
sheet to a final diameter !
Large holes were sawn out with fret saw.
Flanging rear end of the cleading with a
large steel tube as a 'former'. Note an aluminum
band secures the sheet around the tube.
The boiler bands were made of commercial
brass band sheet. At both ends, small brass
angles were riveted and silver soldered.
The lagging was covered with the cleadings
and tightened with the boiler bands.
The fourth boiler band is on the firebox.
The band is wound under the foundation ring
and tightened at left side of the firebox.
The photo shows a headlight bracket on smokebox
ring. It was cut, filed and silver-soldered.
So as to fix the outer dome around the inner
dome, I added a stud on the inner dome. A
phosphor bronze round bar was silver soldered
and finished in the lathe.
The hand pump handle was too short to operate
easily. So I extended the handle.
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