Dinah Snipes Steveni on tue 7 jun 11
Hi List
Does anyone use SPS's Goldstone Body regularly which is "Goldbar Brown with=
Black specks". I want to compare technical heat work, bisque method, glaze=
s thick or thin, potting sturdy or fine walled. If you don't, but know some=
one who does, could you please forward my query and my email? Much appreci=
ated.
Dinah
Mount Vernon, WA.
www.dinahsnipessteveni.com
www.dinahsnipessteveni.wordpress.com
"To obtain a certain thing, you have to become a certain person."
Zen Buddhist saying
Dinah Snipes Steveni on tue 7 jun 11
Hi Steve...and List:
I've been using it with mixed success. I just had blebbing/blisters in the =
=3D
body at at Orton ^6 over to 5 o'clock with a thick app of glaze. My firing=
=3D
schedule is as follows.=3D20
Bisque ^05: (all temps in centigrade)
66 to 200
100 to 600
140 to 960 Hold .20
200 to 800
Gloss for dampish ware: ^6
37 to 104
176 to 1093
128 to 1196 Hold .15
260 to 1080
88 to 888
All those 8s are a nod to May Luk who claims it's a "Chinese thing" with 8 =
=3D
as a lucky number!
I just had a hugely promising ash glaze test on a small bowl in Goldstone. =
=3D
No blebbing. Lowered old UK recipe of mine down from ^8/9 which is a work s=
=3D
till in progress as recent Clayart discussion threw me right back at Phil R=
=3D
oger's Ash Glazes. What an indispensable resource. Anything in particular =
=3D
in those schedules which I could alter to get more consistent results? I co=
=3D
uld fire to ^5 and hold 20 minutes. I've got some big bowls in bisque fire =
=3D
as I write and will gloss fire at ^5. Just a final thought, should I bisque=
=3D
to 1020d c to expel any - not even sure is this is correct terminology her=
=3D
e -- out-gassing (LOL)of that body before it gets covered in a glaze? Well,=
=3D
if I get blebbing from the ^5 gloss firing, this might be an indication th=
=3D
at I need to bisque higher. The above gloss firing schedule is Not the one =
=3D
I use for a slow down fire. Another strategy would be to partially glaze --=
=3D
interior and lip/rim/lugs/handles and leave outer body un-glazed and "brea=
=3D
thing", as it were, as it's so lively and tactile -- inspiration John Leach=
=3D
's work at Muchelney Pottery. I also use CKK6 (porcelain) and SeaMix5 Tan,=
=3D
Vashon red, Vashon white bodies which afford me a Huge palette of differin=
=3D
g glaze results using same glazes at ^6. Pix on Electric Cone 6, Mid-fire P=
=3D
otters site. Again, thanks for any ways forward.
Dinah
Mount Vernon, WA.=3D20
www.dinahsnipessteveni.com
www.dinahsnipessteveni.wordpress.com
"To obtain a certain thing, you have to become a certain person."
Zen Buddhist saying
Ron Roy on thu 9 jun 11
Hi Dinah,
If that is an iron bearing body you should try a slower bisque - no
faster than 75C per hour after 700C and I recommend going to cone 04 -
that little soak at the end is OK but slow firing down should not be
necessary.
You could be trapping carbon with the fast bisque which can reduce the
iron oxide and turn it into a strong flux.
Make sure there is extra oxygen to help burn out any organics - have a
vent on or leave your top spy open.
RR
Quoting Dinah Snipes Steveni :
> Hi Steve...and List:
>
> I've been using it with mixed success. I just had blebbing/blisters
> in the body at at Orton ^6 over to 5 o'clock with a thick app of
> glaze. My firing schedule is as follows.
>
> Bisque ^05: (all temps in centigrade)
> 66 to 200
> 100 to 600
> 140 to 960 Hold .20
> 200 to 800
>
> Gloss for dampish ware: ^6
> 37 to 104
> 176 to 1093
> 128 to 1196 Hold .15
> 260 to 1080
> 88 to 888
>
> All those 8s are a nod to May Luk who claims it's a "Chinese thing"
> with 8 as a lucky number!
>
> I just had a hugely promising ash glaze test on a small bowl in
> Goldstone. No blebbing. Lowered old UK recipe of mine down from ^8/9
> which is a work still in progress as recent Clayart discussion threw
> me right back at Phil Roger's Ash Glazes. What an indispensable
> resource. Anything in particular in those schedules which I could
> alter to get more consistent results? I could fire to ^5 and hold 20
> minutes. I've got some big bowls in bisque fire as I write and will
> gloss fire at ^5. Just a final thought, should I bisque to 1020d c
> to expel any - not even sure is this is correct terminology here --
> out-gassing (LOL)of that body before it gets covered in a glaze?
> Well, if I get blebbing from the ^5 gloss firing, this might be an
> indication that I need to bisque higher. The above gloss firing
> schedule is Not the one I use for a slow down fire. Another strategy
> would be to partially glaze -- interior and lip/rim/lugs/handles and
> leave outer body un-glazed and "breathing", as it were, as it's so
> lively and tactile -- inspiration John Leach's work at Muchelney
> Pottery. I also use CKK6 (porcelain) and SeaMix5 Tan, Vashon red,
> Vashon white bodies which afford me a Huge palette of differing
> glaze results using same glazes at ^6. Pix on Electric Cone 6,
> Mid-fire Potters site. Again, thanks for any ways forward.
>
> Dinah
> Mount Vernon, WA.
> www.dinahsnipessteveni.com
> www.dinahsnipessteveni.wordpress.com
>
> "To obtain a certain thing, you have to become a certain person."
> Zen Buddhist saying
>
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