Article number: M033---100g
Availability: On backorder

Extremely stable, surviving without melting at very high temperatures. 4-7% produces semi opaque, 8-10% usually produces full opacity but some transparent glazes do require more. Has a low expansion so tends to reduce crazing but crawling and pin holing can occur in high zircon melts - normally solved by cooling slower and ensuring a good bond when applying the glaze. It reacts less with colourants in the glaze than tin does - significantly cheaper than tin but only half as effective.Zircon stiffens the glaze and produces a harder glaze surface and reduces thermal expansion more than tin. Glass jar is for illustration purposes only.

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