neadi
from
Ireland
asks
Are these low firing smooth clays ok for simple handbuilding? tiles, slab building, pinch pots etc?
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Scarva Replies:
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Smooth bodies are not ideal for handbuilding, the best clays to use are ones with grogg in them as this will give you more strength in the green/making stage. You could make small things with a smooth clay body but it will struggle once you go over 15cm in height. Grogg also helps reduce warpage which is something to consider when making tiles.
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Gary
from
United Kingdom
asks
At what temperature does this clay become impermeable to water?
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Scarva Replies:
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Around 1200°C. Hope this helps.
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Guillermo
from
United Kingdom
asks
Is this clay from the UK?
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Scarva Replies:
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Yes it is manufactured in Stoke on Trent, England.
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Lesley
from
United Kingdom
asks
Is this clay suitable for making a fine mould of a flint hand tool to be cast in pewter?
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Scarva Replies:
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Yes this is ideal, hope this helps.
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Anne-Marie
from
United Kingdom
asks
I want to use low temp (1100) glazes with this clay and followed advice I saw to bisque to 1160 but my sprayed glazes didn't settle as the body wasn't porous enough. What do you recommend is the highest bisque temp I should try for spraying glazes? How will firing at 60C lower than the maturing temp affect the clay? thanks
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Scarva Replies:
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Ideally bisque firing to 1000oC makes applying the glaze easy as the ware is still porous so can absorb the glaze. The higher you fire the less absorbent the body becomes. Doing a high bisque means the body is mature but applying glaze is difficult as you are aware. You could try heating the ware up a little or slightly decrease the bisque temperature however the ware will remain porous.
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Ian
from
United Kingdom
asks
Hi.
Could you tell me the shrikage @ cone 6.
Many thanks
Ian
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Scarva Replies:
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The shrinkage will be approximately 7%.
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Sam
from
United Kingdom
asks
Does this have a high content off ball clay suitable for making slip for moca diffusion?
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Scarva Replies:
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Hi,
There should be a high enough percentage of ball clay in this body to create your required slip.
Hope this helps!
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Susan
from
United Kingdom
asks
Hi
What is the shrinkage at 1240 c
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Scarva Replies:
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Hi, shrinkage at 1240 is approx 14% but I would suggest doing your own tests under the firing conditions in your kiln
Hope this helps!
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pip
from
United Kingdom
asks
i am quite an experienced thrower and love this clay but i have only just got my own kiln so am new to the firing process - to date it has all been done for me! I like to use Amaco paint on stoneware potters choice glazes which they describe as cone 5-6. do you think they will work on earthsstone ES10?
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Scarva Replies:
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Hi yes the ES10 has a relatively wide firing range so the Amaco Potters Choice will be an ideal combination. Hope this helps.
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beth
from
Ireland
asks
Can I glaze fire higher than I bisque fire? not only with this clay but in general..
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Scarva Replies:
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Yes generally this is the best way to glaze. I would recommend bisque firing most clay bodies to 1000oC then glaze firing higher.
When you bisque fire to 1000oC the vessel will remain porous so when you glaze the pot it will act like a sponge absorb the water from the glaze and help it adhere to the vessel. The higher you bisque the less absorbent the vessel will be and eventually become very tricky to get the glaze to stick to the walls of the pot.
Stoneware glazes would be ideal for this clay body. Hope this helps.
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Vicky
from
United Kingdom
asks
Hi can you tell me the absorption rate of this clay at a cone 6 please
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Scarva Replies:
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I am sorry we do not have the absorption rates for our clay bodies.
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Pam
from
United Kingdom
asks
Which clear glaze would you recommend?
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Scarva Replies:
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I would recommend using our GZ2150 Multi purpose transparent, here is a link for you: https://www.scarva.com/en/Scarva-GZ2150-Zinc-Free-Multi-Purpose-Leadless-Stoneware-Transparent/m-234.aspx
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Caroline
from
United Kingdom
asks
Can you tell me what are the main differences between ES5 and ES10. Which would be best for throwing larger platters and large bowls without cracking or warping. Fired to 1220 - 1240. I like a smooth texture and white/off white colour. Thank you
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Scarva Replies:
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Hi there, we recommend ES5 as it contains 5% molochite, whereas ES10 does not have the addition of grog.
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Adam Beales
from
United Kingdom
asks
How much grogg is in this clay ?
Thanks Adam
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Scarva Replies:
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This clay contains no grogg, so is very smooth.
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