Carolyn Sawyer on tue 14 sep 99
Dear Clayarters,
I have a dying peach orchard across the street from me and wondered what an
ash glaze with that particular wood would be like. Has anyone used it?
We use a combinations of woods in our fireplaces at home...from Hickory to
Oak to Pine. We also use starter logs. I'm figuring that they (the starter
logs) would ruin the ash composition. If I were to use the fireplace ash,
I'm guessing that I would have to burn just one type of wood at a time. Is
there ever a time when you can use a combination?
A while back I asked the list if anyone had a Kenzan's Ash Glaze. Got no
response. But in cleaning out the Tryon studio I found a stash of 30 year
old recipes and was thrilled to find the Ash glaze! Here's my chance to give
back something to you all who have helped me enormously.
Cone 7-8 Oxidation
Kenzan's Ash Glaze
Talc 7.1
wood ash (add later don't screen) 35.8
Albany Slip 19.7
NS 30.4 Apply thinly-in combination, apply
ash last
Kaolin 3.5
Flint 3.5
Add
RIO 2.1
Rutile 4.
Carolyn
Camobello SC
Hank Murrow on wed 15 sep 99
Dear Carolyn; Fruitwood generally contains a higher proportion of
phosphorus pentoxide, which is a very useful glassformer, like silica. Chun
blues benefit greatly from some P2O5; and one of my most useful glazes has
.222 molecular equivalents of P2O5 from Bone ash. The wood closest to the
fruit has the highest P2O5 content. And as with all vegetable ashes, one
must not contaminate them with dirt or any other source of oxides; which
usually means burning them on a concrete slab. And don't drag the branches
though the dirt to the clean slab. As someone pointed out on ClayArt awhile
ago, wood ash represents only 2+% of what you burn; and a little dirt will
= 2% easily: result__dirty glaze. May be a beauty, but won't reveal what
peach ash would give. I use combo ashes from time to time; mainly when I
have a large enough supply of the 'combo' to repay the investment in
testing and to glaze enough pots that I risk tiring of it. Hoping this
clarifies your questions, Hank in Eugene
>----------------------------Original message----------------------------
>I have a dying peach orchard across the street from me and wondered what an
>ash glaze with that particular wood would be like. Has anyone used it?
>
>We use a combinations of woods in our fireplaces at home...from Hickory to
>Oak to Pine. We also use starter logs. I'm figuring that they (the starter
>logs) would ruin the ash composition. If I were to use the fireplace ash,
>I'm guessing that I would have to burn just one type of wood at a time. Is
>there ever a time when you can use a combination?
verety * on wed 15 sep 99
when my professor burned his kiln for 8 days we all helped with the firing,
we used pine and oak primarily i think...it depended on how hot the kiln
was, softer and harder woods...softer at lower temps and harder at higher
temps...at least thats what i seem to remember...the results were
amazing...it was my first time and i was stunned...everything came out
absolutely fabulously...however my teacher is also a genius and build a kick
butt kiln...but the results were amazing and we used pretty much anything
that would burn to throw into that baby...
>From: Carolyn Sawyer
>Reply-To: Ceramic Arts Discussion List
>To: CLAYART@LSV.UKY.EDU
>Subject: Peach Wood Ash?Kenzan's ash glaze
>Date: Tue, 14 Sep 1999 16:48:52 EDT
>
>----------------------------Original message----------------------------
>Dear Clayarters,
>
>I have a dying peach orchard across the street from me and wondered what an
>ash glaze with that particular wood would be like. Has anyone used it?
>
>We use a combinations of woods in our fireplaces at home...from Hickory to
>Oak to Pine. We also use starter logs. I'm figuring that they (the
>starter
>logs) would ruin the ash composition. If I were to use the fireplace ash,
>I'm guessing that I would have to burn just one type of wood at a time. Is
>there ever a time when you can use a combination?
>
>A while back I asked the list if anyone had a Kenzan's Ash Glaze. Got no
>response. But in cleaning out the Tryon studio I found a stash of 30 year
>old recipes and was thrilled to find the Ash glaze! Here's my chance to
>give
>back something to you all who have helped me enormously.
>
>Cone 7-8 Oxidation
>Kenzan's Ash Glaze
>Talc 7.1
>wood ash (add later don't screen) 35.8
>Albany Slip 19.7
>NS 30.4 Apply thinly-in combination,
>apply
>ash last
>Kaolin 3.5
>Flint 3.5
>
>Add
>RIO 2.1
>Rutile 4.
>
>Carolyn
>Camobello SC
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Martin Howard on wed 15 sep 99
Dear Carolyn. Did you find in that treasure trove of old recipes, any
ash analyses? They would really help us to put the recipes through the
computer and then adjust for our cones and clay conditions.
Martin Howard
Webbs Cottage Pottery and Press
Woolpits Road, Great Saling
BRAINTREE
Essex CM7 5DZ
01371 850 423
araneajo@gn.apc.org
Carolyn Sawyer on fri 17 sep 99
Unfortunately the only other notation on her card was "must be adjusted to
each new wood ash batch". I have no idea what type of wood she used and the
hills here have about the widest variety of hard woods in the country! She
also had a card attached to it with slip recipes to be used with ash glazes
with a notation regarding CM Jan. 83 pg59. I'll be happy to post them if
anyone would like.
Carolyn
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