Yvonne
from
Netherlands
asks
If you want the result to be transparent at which temperature do you have to do the biscuit (first) firing?
Scarva Replies:
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I think what you mean is translucent not transparent. If the work was to be glazed I would bisque fire to 1000°C then apply glaze and fire to 1235°C with a 30 minute soak, if the work was not glazed you could follow the same slow bisque firing schedule but increase your end temperature to 1235°C with a 30 minute soak.
It is important to note that translucency will also be affected by the thickness of the clay, if translucency is what you desire I would recommend having a look at bone china clay it is available as a casting slip or plastic clay body, this is the best clay for whiteness and translucency it is so white porcelain looks grey in tone when they are placed side by side, hope this helps.
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mimmi
from
Sweden
asks
Hello,
I have tried your paper clay porcelain slip because I wanted to try casting something quite big and sort of thin. However my shape collapsed/warped in the middle after I fired it to 1225 degrees. Is there anything I can do to support the cast porcelain? Also this time I fired it unglazed, but if I have to use some sort of support, how can I glaze it when I want to? Shall i glaze it in a lower temperature? Should I have chosen another porcelain?
Regards Mimmi
Scarva Replies:
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Thank you for your question. Flax paperclay pouring slip is not ideal for casting forms, especially large ones it is best suited to making flat slabs. I would recommend using our CS30 Porcelain casting slip however it is important to note that the thickness of the piece will determine how well it stands up. Out of all clays porcelain bodies melt the most this is what gives them that beautiful translucent quality unfortunately it also makes them weaker. Ceramic fibre can work well as a support for unglazed work, hope this helps.
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Izzy
from
United Kingdom
asks
Can porcelain paperclay be used for domestic ware? I always thought not but as the paper is burnt out when high fired to 1260 degrees I am wondering why not? I am making jugs with patterns impressed into the clay which can have a tendency to split when drying, so I need a strong porcelain. If ES600 isn't suitable then please can you suggest another porcelain clay. Thank you.
Scarva Replies:
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Providing the ES600 is fired to the correct temperature with a suitable glaze there should be no problems using it for functional tableware. Hope this helps.
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Ros Collett
from
United Kingdom
asks
I would like to know the shrinkeage rate of the TS flax porcelain paperclay from leather hard to final fired stage(1230)
Is it likely to be a bit less than 'standard' porcelains ?
Many thanks in anticipation
Ros
Scarva Replies:
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Shrinkage to biscuit - 6.6%
Shrinkage to Stoneware - 13.3%
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Claire
from
France
asks
I'm new to porcelain work, but am loving creating pieces with the Scarva porcelain paper clay. I usually work with earthenware clay and slip and bisque fire to cone 06 (1060degC). My question is: Can I bisque fire my earthenware and porcelain paper clay at the same time to 06?
Thanks
Claire
Scarva Replies:
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Hi Claire,
Glad to hear you're enjoying using the Flax Paper Clay. Yes, you can bisque fire both clays in the same firing. Cone 06 is actually 1000°C which we find to be a perfect temperature for bisciut firing. Hopefully this helps you!
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Louise
from
United Kingdom
asks
Have you had any experience or feedback on raw-glazing with ES600 clay? If so, do you have any advice for appropriate firing schedule... or advice for trying out a firing schedule. The glaze will be SW crackle glaze (suitable for porcelain). Many thanks!
Scarva Replies:
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I sorry we do not recommend raw glazing any clay.
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Tamsen
from
United Kingdom
asks
Can I use botz glazes (high temperature) with this clay? I have avoided using them on porcelain paperclay so far, but I have used them on ordinary porcelain successfully (albeit with a bit of slumping) and just wondered.
Scarva Replies:
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Yes should be fine.
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Heather
from
United Kingdom
asks
Would this clay be suitable for sgraffito work? I'm looking for a clay body (that is white) that I can make panels from, paint over with black slip, sgraffito and then construct into a form, do you think this clay would be suitable?
Scarva Replies:
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Yes this is possible to do with this clay.
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Pernilla
from
Sweden
asks
I received Scarva T.S. Flax paper Clay Porcelain Body E/S 600. I am looking for firing range for bisque fire and glaze fire. Can I use stoneware glazes?
Bisque fire: (120C/h to 600C, 180C/h to 930, no soak)?
Glaze fire: (200C/h to 600C, 240C/h to 1240C, 15 min soak)?
Looking forward to hearing from you ;o)
Scarva Replies:
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For the bisque firing I would go slower so:
60oC per hour to 300oC then 100oC per hour to 1000oC.
The glaze firing schedule is fine. Yes you could use stoneware glazes however because the clay is melting more than a stoneware body this will make the glazes melt more so bear this in mind when glazing your vessels.
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Alice
from
United Kingdom
asks
Hello
Could i use a transparent stoneware glaze with this clay? I plan on high firing to 1250 and I have your scar a transparent stoneware glaze
Many thanks
Alice
Scarva Replies:
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Yes this will work.
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Rachel
from
United Kingdom
asks
Hi, can you tell me the shrinkage percentage for this clay?
Scarva Replies:
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Hi,
Approx 16% at 1200°C
Hope this helps!
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Ferne
from
United Kingdom
asks
Do I have to prepare this clay from a powder or is it ready to work with when I receive it?
Scarva Replies:
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Hi, no - this is plastic clay body, ready to use straight from the bag! Hope this helps!
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Rina
from
United States
asks
Could I use this product as an air dry clay?
Scarva Replies:
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Yes it is possible to use this clay body as an air dry clay however it will not be the same colour as displayed in the photo which is a fired example. Hope this helps.
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Janice
from
United Kingdom
asks
I’m using the paper clay to make Xmas tree cut outs from a thin slab. Should I roll out like I do with stoneware on a cloth or is there a special technique? I did a small sample last night on a board - rolled out, cut with cutters and peeled away the scraps leaving the shapes in the board covered with loose cling film. This morning it was still really sticky and stuck to the board. Does it take a lot longer to fry than stoneware? Thanks.
Scarva Replies:
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Hi, yes you'd be best to roll out on a cloth or better still a plaster bat - you'd get less sticking issues. The clay doesn't really take any longer to dry, covering with plastic will slow the drying time as you're aware.
Hope this helps!
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Jill
from
United Kingdom
asks
Also using this for first time, making small, Christmas hanging ornaments that are impressed but won’t be glazed. Can I just single fire to a high bisque on a slow schedule?
Scarva Replies:
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Yes I often do this myself and works a treat just have a slow ramp similar to t bisque firing but increase your end temperature. Hope this helps.
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Jill
from
United Kingdom
asks
What the vitrification range of this clay? Thanks.
Scarva Replies:
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This clay body will begin to vitrify around 1210oC.
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Jill
from
United Kingdom
asks
Is this glaze compatible with ES600 - Scarva GZ2305 Zinc-Free Porcelain Transparent?
Scarva Replies:
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Hi, yes that glaze should be fine! Hope this helps
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Sabine
from
Germany
asks
Hello from germany. I Love Flax Po. Is Flax Po frost resistant after firing at 1240? And does Flax Po stick to the kiln when fired at these temperatures?
Many greatings
Scarva Replies:
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Hi, yes it should be frost proof at 1240, but it depends on the shape of the pot. To prevent it from sticking we would advise placing it on some calcined alumina or batt wash. Hope this helps.
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Nicola
from
United Kingdom
asks
Hello!
Can I use this clay to make ceramic tiles?
Also how would I go about using glass frit with this clay?
Thank you
Scarva Replies:
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Hi, yes you can, but we would advise nothing bigger than 150mm/6in square.
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Marta
from
Belgium
asks
Is this porcelain vegan? I don’t want to work with products that have bone ash in it. Thank you in advance for your answer
Scarva Replies:
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Hi, there are no animal derived materials in this clay. Hope this helps!
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joseph
from
United Kingdom
asks
which glaze do you recommend to use with this product
Scarva Replies:
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I would recommend using a glaze from our range of Scarva Porcelain glazes if you prefer opaque colours our range of Nano Coloured Glazes firing to 1260ºC will work with most porcelain bodies.
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