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We'll have a kiln with a view
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Breathtaking views of Wellington Harbour are one of the
sublime pleasures enjoyed in constructing Wellington's first
anagama kiln being built on the property of June and Graeme
Houston, members of the Wellington Potters' Association (WPA).
Called "Te Haunui" ("the big wind"), the
property is approximately 5 km from the Hutt motorway in
the hills of rural Horokiwi. Most Wellingtonians and motorway
commuters have little knowledge of the area that is best
known for a major quarry that has served the region since
1929. Difficult access, narrow roads and precipitous drops
in the area where the road skirts the quarry tend to discourage
the unadventurous. Those who own lifestyle blocks in Horokiwi
enjoy, in addition to the spectacular views, the undoubted
benefits of rural life while living only a few minutes away
from Wellington and Hutt City.
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Hazard of a wet weekend
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The anagama kiln project was the brainchild of Richard Stratton
(a WPA member) and his friend Andy Hope both of whom have
worked as full-time potters. Richard had also fired anagama
kilns. Over a period of some 10 years and several kiln demolitions
later, Richard and Andrew had hoarded a large quantity of
kiln bricks with a view to building an anagama kiln. That
opportunity arose through the generous offer of land on which
to build the kiln by June and Graeme Houston.
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Fine day Mal Sole and Shige
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Early this year a number of potential sites for the kiln
were identified by Richard and Andy in consultation with
Graeme. The site eventually selected is on a terrace conveniently
located next to a road and near a workshop, a source of electricity
and equipment used in the preliminary phases of the project.
The site is reasonably protected from the wind.
Shige Ohashi, our Japanese member and tutor, designed the
kiln in consultation with Richard. A talented potter, Shige
who has a Master of Engineering degree in Applied Physics,
worked for IBM in Japan before emigrating to New Zealand
nearly 4 years ago. He has extensive experience in operating
anagama kilns. The kiln will comprise two chambers, the first
in which the wood will be burnt and the pots fired and
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Trusses go up
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the
second a "sutema"(pronounced "stema"),
which will act a buffer. In Shige's words, "The
wall that divides this kiln into the substantial first stage
large chamber and the second small chamber has several small
openings (five or six by one brick size hole) at the base.
A small wall like a firewall is laid in front of the flame
outlet of the wall between the small chamber and the flue.
These make the flames run with the flow well-balanced and
broadened out in the chamber."
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The start of earthworks
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The kiln is 3.76m long, 1.94m at its highest point and tapers
from a width of 1.68m at the front to 1.32m at the back.
The capacity of the first chamber of the kiln is approximately
2.1 cubic metres. The construction of the kiln will require
approximately 2200 bricks.
Work on the project has been undertaken at weekends and
during the week by a small but enthusiastic team of people.
The work involved is greater than first envisaged but interest
has not flagged.
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Graeme Houston gets the purlins in place
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The first construction phase of the project started in March
with the excavation of the clay site both by hand and mechanical
digger. Initially the pit for the kiln was relatively shallow
but was later deepened to approximately 1.25m in the fire
box and stoker's pit area. This was done to minimise the
kiln's exposure to avoidable water seepage and also to buttress
it. A sump and drain were installed in the stoker's pit to
ensure that any unwelcome water draining from beneath the
kiln itself or surface water could be disposed of. The drain
is also connected to a gutter on the western side of the
shelter built to house the kiln. Several cubic metres of
drainage shingle underpin the drainage system. Prior to installing
the drain it was necessary on at least two occasions to siphon
water out of the pit following deluges before work could
recommence. Those who undertook the digging over a prolonged
period became lean and fit as a consequence!
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John Corsham - non potter helper
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The next phase was the construction of an 81m sq shelter
to house the kiln, provide storage space for drying timber
for firing the kiln and chores such as cleaning bricks. The
open-sided shelter was built using metal beams and uprights,
the latter having originally been purchased by the Houstons
for the construction of glasshouses, joined by a latticework
of wooden purlins. The structure was secured to substantial
600mm square concrete foundations. Mixing the concrete was
not without its moments. While mixing concrete for the final
two foundations the belt on the mixer broke. As a replacement
could not be readily found, the problem was remedied by plaiting
three lengths of nylon cord into a belt, which served the
purpose admirably. The shelter with a roof area of about
100 sq metres was clad in a mixture of demolition and new
corrugated iron. Barring some finishing touches the shelter
is substantially complete.
The cost of the project to date is approximately $1000.
However, were it not for the unstinting generosity of the
Houstons who provided timber from their timber mill and demolition
corrugated iron as well as other materials, labour, building
advice and tools, the cost would have been beyond the reach
of the WPA without recourse to major fund raising. The project
has also been greatly assisted by donations of materials
by a number of other members. An application to Pub Charity
for a donation towards the construction of the kiln itself
and kiln equipment has been made but at the time of writing
the outcome is not known
The construction phase of the kiln has started with the
bricks being moved onto the site and the delightful chore
of cleaning them now upon us.
When completed potters from around the region will be welcome
to take part in our firings.
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Ready for the iron
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Site foreman Alan_Ross |
The_Keen Team - some_of - Shige, Wayne and Richard
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