< Sand Dome >
I chose square sand-dome for my William.
It hides the boiler water feed plug. Top
of the water plug imitates a hatch of the
dome, so the top hole and the plug should
be truly coaxial.
Top and both sides of the dome is made from
1.2mm brass sheet bent with Metal Bender.
The large hole is drilled and extended in
four-jaw.
Tracing profile of the bent plate, front
and rear plate are prepared. I utilized 0.7mm
brass pins to secure the both plates in the
bent plate during soldering operation.
Sand pipe covers are made from brass block.
The block is placed onto the dome side and
drilled through, so as to secure with brass
pins during soldering.
Water feed bush with the plug. The bush has
over hanged flange on which the sand dome
will be fixed.
Sand dome bottom plate is prepared and screwed
onto the bush. Note four legs of brass square
bar are hanged at every corner.
The dome is aligned as follows. Put the dome
on the bottom plate and screw the plug into
the bush, then the dome is automatically
centered. Drop suitable adhesive between
the dome and the legs, then remove whole
job from the bush. Drill through for small
rivet, clean all parts and assemble with
flax and rivets. Then finish with silver
soldering.
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