{"product_id":"speedball-underglaze-avocado-16-oz-lead-free-dinnerware-safe-ceramic-color-cone-05-10","title":"Speedball Underglaze Avocado 454 g — Lead-Free Dinnerware-Safe Ceramic Colour, Cone 05–10","description":"\u003cp\u003e\u003cstrong\u003eSpeedball Underglaze in Avocado is a lead-free, dinnerware-safe ceramic colour formulated for brushwork, sgraffito, and consistent firing across Cone 05–10 in a 16 oz bottle.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you hand-paint cups, add detailed linework to plates, or build layered glazes, this avocado underglaze delivers an opaque, stable colour that won’t run when applied properly. Made in the USA and carrying AP safety credentials, the product is designed for studio and classroom use, offering a thick, easy-to-thin formula that adapts to multiple decorative techniques.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Speedball Avocado underglaze behave during application?\u003c\/h3\u003e\n\u003cp\u003eThe formulation is thicker than standard liquid slips so it spreads smoothly without sagging, yet it can be thinned with water for washes or fine lines. Paints hold brushstrokes well and stay where you place them after drying, which helps when layering or doing precise work.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply 2–3 liberal coats for fully opaque coverage\u003c\/li\u003e\n  \u003cli\u003eThin with water for watercolour-like washes or controlled linework\u003c\/li\u003e\n  \u003cli\u003eHolds brush detail for sgraffito and mishima techniques\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat firing temperatures and results can I expect?\u003c\/h3\u003e\n\u003cp\u003eSpeedball Avocado is formulated to fire reliably across a broad range, from low-fire Cone 06 up through mid\/high-fire Cone 10 when testing and technique are adapted. Colours may mature slightly with higher heat, so test tiles to confirm final tone and compatibility with your chosen clear glazes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for Cone 06 through Cone 6 performance\u003c\/li\u003e\n  \u003cli\u003eCan be fired successfully up to Cone 10 with prior testing\u003c\/li\u003e\n  \u003cli\u003eMaintain consistent kiln schedules to reduce colour variation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this underglaze safe for functional ware and classrooms?\u003c\/h3\u003e\n\u003cp\u003eYes — the paint is lead-free and carries the AP Seal when used and fired as directed and finished with a covering glaze. Its durable formula makes it suitable for educational settings, studios, and professional ceramicists seeking dinnerware-safe decoration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLead-free, AP Seal certified when used per instructions\u003c\/li\u003e\n  \u003cli\u003eRecommended to use a covering glaze for food-contact safety\u003c\/li\u003e\n  \u003cli\u003eMade in the USA — consistent quality for classroom supplies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I store and prepare the 16 oz bottle for best results?\u003c\/h3\u003e\n\u003cp\u003eKeep the jar tightly sealed and stored at room temperature to preserve viscosity. Stir thoroughly before use to reincorporate pigments and maintain a uniform colour; cap well after opening to prevent skinning or drying on the rim.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStir or shake gently to blend pigments before each session\u003c\/li\u003e\n  \u003cli\u003eSeal tightly; store upright at moderate temperatures\u003c\/li\u003e\n  \u003cli\u003eIf thickened, add a few drops of water and mix to desired consistency\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Ceramics students, hobby potters, and professional studio artists who need a reliable, opaque coloured underglaze in a natural avocado tone. It’s especially useful for those who work with brush painting, sgraffito, mishima, or layered glaze effects and who require dinnerware-safe colours with a wide firing range.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use Speedball Avocado underglaze on functional dishes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It is lead-free and AP Seal certified when used and fired as directed, and should be covered with a glaze for food-contact safety.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to thin this underglaze before painting?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Not necessarily. It comes thick for brush detail, but you can thin with water to create washes or smoother flow as needed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Speedball","offers":[{"title":"Default Title","offer_id":55294649794897,"sku":"B08JQNJL52","price":42.84,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/speedball-avocado-front-label.jpg?v=1791933835","url":"https:\/\/craftiche.co.uk\/products\/speedball-underglaze-avocado-16-oz-lead-free-dinnerware-safe-ceramic-color-cone-05-10","provider":"Craftiche","version":"1.0","type":"link"}