Gail Dapogny on wed 18 dec 02
Apologies to all for not including cone info. We fire this in our gas red.
kiln, cone 9-10.Ron or someone will have to tell us whether it would work
at lower temps.
A few oxides used include:
Moss green: .5% cob c, 2% fe
Dark brown: 3% mng diox, 5% rutile
Another reliable dry cement-like glaze , cone 9-10:
CORTEN
Sieved wood ash 40
EPK 30
Bone Ash 20
Yellow Ochre 5
Gran Rutile 5
Again, it takes other oxides well.
-----Gail
>Gail - what cone does this fire to? Thanks, Bob Bruch
>What about glazing the inside and other areas where roughness is needed
>with a cement glaze? That would give a rough surface, but would still
>supply a protective coating. I am thinking of something like the following:
>
> CEMENT GLAZE
> cement 25
> ash 25
> kaolin 50
> total 100
>This does not store well., so mix only what you need. Takes oxides fine.
>---Gail
Ron Roy on fri 20 dec 02
Hi Gail,
I don't know how to deal with this because I have no idea what the analysis
for the kind of ash anyone would use - or cement for that matter.
There should be some indication as to what processing the ash has gone
through - aside from being sieved - is it washed - and how many times -
like that.
I would like to be able to deal with ash but every one is different -
dependent on species of the plant and where it was grown. Those potters who
deal with ash glazes will be the best people to ask how to work with ash
glazes - Craig will be one.
RR
>Apologies to all for not including cone info. We fire this in our gas red.
>kiln, cone 9-10.Ron or someone will have to tell us whether it would work
>at lower temps.
>A few oxides used include:
>Moss green: .5% cob c, 2% fe
>Dark brown: 3% mng diox, 5% rutile
>
>Another reliable dry cement-like glaze , cone 9-10:
>CORTEN
>Sieved wood ash 40
>EPK 30
>Bone Ash 20
>
>Yellow Ochre 5
>Gran Rutile 5
>
>Again, it takes other oxides well.
>
>-----Gail
>
>
>>Gail - what cone does this fire to? Thanks, Bob Bruch
>>What about glazing the inside and other areas where roughness is needed
>>with a cement glaze? That would give a rough surface, but would still
>>supply a protective coating. I am thinking of something like the following:
>>
>> CEMENT GLAZE
>> cement 25
>> ash 25
>> kaolin 50
>> total 100
>>This does not store well., so mix only what you need. Takes oxides fine.
>>---Gail
>
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Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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