Presentation

Funnily, the idea to make these experiments came
from Clayart, years ago a clayarter suggested that
washed wood ash could serve as a "calcium frit"
in high fire clays.
We made more tests than those presented
here (formulas). For a while I thot I would write
an article on this issue, then changed my mind,
"put evething on ice" for a while, wrote my
book on Toxicology and studied Esperanto.

As a starting point I used the chemical analysis
of Plainsman H-440 as published on their site.

The wood ash used was washed 3 to 5 times and
30 to 60 mesh-sieved.

Plainsman H-440 plus 10% Wood Ash

Plainsman H-440 plus 5% Wood Ash

Clay Recipe Made Up Using Plainsman Analysis of Clay H-440

Of course we did not take into account the particle
size distribution used by Tony Hansen. We used the
200-mesh granulometry of the usual materials in
our glaze lab.

Only the wood ash was granular and, at the same

time served as grog.

Theoritical Chemical Analysis of the Wood Ash

The chemical analysis of the wood ash is derived

from Richard Behrens proposition for a substitution

for any type of wood ash, if you do not have any.

Not having the analysis of my maple ash, I used his

proposition and fed it into my computer under the name

"Ash Berhens"

Group of Ash Clays

Ash Clay #8

Ash Clay #7

Ash Clay #6

Ash Clay #5

Ash Clay #4

Ash Clay #3

Ash Clay #2

Ash Clay #1