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cheapest diy kiln - ivor's mention,

updated wed 21 feb 07


pdp1@EARTHLINK.NET on mon 19 feb 07

on what had been permutations of Hank's mention, about my mention,

Hi Ivor, Hank, all...

My own tentative and imagined appreciation , is
that anything which serves as a Vaopr Barrier on
the outside of a Fiber Kiln, should effect a
stagnation of the Vapors 'in' the Fiber, to where
they would not contact it much, or thoroughly,
even if they may be imagined to swirl or move
variously 'in' the superficial depths of the Fiber
in some paralell way or other.

This may allow virtually any material or sheet to
be used, so long as it obliges a few hundred
degrees or so of sustained heats without

Probably too, at least to my speculative thinking,
if one applied ITC ( or even old time plain and
simple 'White Wash' for all I know, ) to the Sheet
material, so it's interface with prospective
Vapors is mediated BY the ITC ( or as may be, ) ,
then, likely, even simple 'pasteboard' or heavy
Paper could work decently for many years of use.

Stainless Steel wise -

I one time set aside some 'Kraft'
Macaronii-and-Cheeze left-overs, in a high quality
Stainelss Steel Saucepan, with the lid on it,
which then was forgotten then
later, got set on the floor pending a good
scrubbing...and was pushed under a Table by the

Anyway, months later, I found it, realized the
left overs had dried out to where washing the
Saucepan was going to be tedious, so I added some
Water to soften things up pending a good
Sink-soaking and scrubbing...and put the lid back

Then, it was forgot about again ( this was a
hectic or distracted period I might add...amid a
larger longer hectic or distracted period, )

Later, finding it again, I once again added more
Water...put the lid back on...where...

Having set it aside to 'soak' in that way once
again, it soon fermented.

Something in the fermenting process appearently
was able to 'eat' the Stainless Steel, and the
Saucepan, previously pristine and heavy gauge, had
become riddled with interior corrosion pitting,
and many fine pin-holes going all the way through,
so, I discarded it of course...

Anyway, kind of interesting, that re-hydrated,
thence fermenting, erstwhile dessicated,
left-over, "Kraft" brand 'Macaronii-and-Cheese'
could produce substances able to 'eat' through
fairly heavy gauge Stainelss Steel of a serious
Sauce Pan...

Could come in handy if one ever needed something
storebought-'easy' to do this sort of thing..!


Best wishes!

el v

----- Original Message -----
From: "Ivor and Olive Lewis"

Although Stainless Steel sheet is used to make the
exterior walls of some kilns and shim may be used
to act as a protective sheath when heat treating
Alloy tools do not forget some varieties of this
alloy are rapidly attacked by superheated steam at
elevated temperatures.

The suggestion of using it to make an impervious
kiln wall has merit but may not be practical. When
working in Scotland I saw a wonderful example of
the corrosion resistance of 18/8 stainless. In
contact with fermenting Whisky Mash, there were
corrosion track lines about 10 mm either side of
every welded seam. The welds were pristine, but
the main metal failed due to electrolytic
corrosion where there was carbide precipitation.
Always select Stabilised Stainless.

Best regards,

Ivor Lewis.
South Australia.