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Scarva GZ2161 Low Expansion Tin Gloss Glaze
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GZ2161
Scarva Low Expansion Tin Gloss Glaze GZ2161 is Cone 9 Stoneware,high gloss white tin opaque glaze designed specifically for range of Scarva Earthstone Professional Black Clay. 
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Works on Black clay
If you have been having difficulties finding a glaze for the Earthstone Black clays, then this is a solution. Most glazes I have tries fail completely on the Black clay but this works well, no bubbling up or crawling. It has a glossy surface and is a strong opaque white. It can also break nicely on the rims to reveal the dark clay beneath.
Andrew TS
United Kingdom
22 March 2018
Helpful?
(35)
(1)
Superb
This on a black body clay is superb, top results unlike most glazes that seem to burn on a black clay this wa made for it.
Tommy
United Kingdom
14 October 2018
Helpful?
(49)
(0)
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Hi. What temperature do you recommend bisque firing to, prior to using this glaze? Thank you.
Kath from United Kingdom
Bisque fire to 1000°C
Scarva Team
Can it also be used on food-safe speckle clays from your Earthstone range? Or only on the black clay?
Sarah from United Kingdom
This glaze was specially developed to be used on the black clays we have never tried it it should work but the result may not be as dramatic.
Scarva Team
Hi. What temperature range is recommended for firing?
Denisa from Denmark
You could fire between 1220-1280oC.
Scarva Team
Is this glaze also compatible with Scarva Earthstone ES65 Terracotta Crank Clay?
Stefanie from Ireland
Yes this may be used on the ES65 Terracotta clay.
Scarva Team
Is this glaze lead-free?
Stefanie from Ireland
Yes it is lead free.
Scarva Team
Is the glaze food safe?
conor from United Kingdom
Here is a link that may help you:
https://www.scarva.com/en/Is-This-Glaze-Food-Safe/cc-40.aspx
Scarva Team
What would happen if you used it on special fleck and fired to cone 6? Please and thanks, Rgds Krissy.
Krissy from United Kingdom
The sample shown on the website is fired on a black black clay body so the glaze breaks on the surface showing the body underneath. If you fired it on a paler clay body the effect will not be as dramatic and just look like a normal white glaze.
Scarva Team
Is this glaze food safe please ?
Sarah from United Kingdom
First and foremost, the term food safe cannot technically be applied to a glaze as supplied.
The final fired piece may be considered “food safe” however this is reliant on such a massive variety of factors outside of any suppliers control that there is no definitive answer. The clay body, form, surface texture, oxide addition, firing schedule and many other variables all need to be considered. Glazes with matt surfaces, crackle glazes or other non-glossy effect glazes should all be avoided for functional ware due to the possibility of the surface harbouring bacteria.
In general provided glazes are fired to maturity on a suitable clay body there should be no issue, however the only guaranteed way to have a piece deemed “food safe” is to have it tested by a certified ceramics testing laboratory. In the UK this is done by Lucideon and can be contacted through their website.
Scarva Team
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