{"product_id":"masa-witgert-29-sf-25-0-0-5mm-vintage-10kg","title":"Witgert Clay 29 SF 25% 0-0.5mm Vintage 10kg","description":"\u003ch3 data-start=\"0\" data-end=\"82\"\u003eWitgert 29 SF Vintage Clay – marbled stoneware clay for building and modeling\u003c\/h3\u003e\n\u003cp data-start=\"84\" data-end=\"334\"\u003e\u003cstrong data-start=\"84\" data-end=\"105\"\u003eWitgert 29 SF Vintage\u003c\/strong\u003e is a plastic, marbled stoneware clay made by combining white and grey clay. After firing, it creates an irregular, grey and white pattern, giving each piece a unique character even without extensive decoration.\u003c\/p\u003e\n\u003cp data-start=\"336\" data-end=\"352\"\u003e\u003cstrong data-start=\"336\" data-end=\"352\"\u003eCharacteristics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli data-start=\"354\" data-end=\"396\"\u003e\n\n\u003cstrong data-start=\"356\" data-end=\"372\"\u003eFired color:\u003c\/strong\u003e grey-white, marbled\u003c\/li\u003e\n\n\u003cli data-start=\"398\" data-end=\"455\"\u003e\n\n\u003cstrong data-start=\"400\" data-end=\"413\"\u003eApplication:\u003c\/strong\u003e hand-building, slab work, and sculpture\u003c\/li\u003e\n\n\u003cli data-start=\"457\" data-end=\"501\"\u003e\n\n\u003cstrong data-start=\"459\" data-end=\"465\"\u003eForm:\u003c\/strong\u003e plastic clay, packed in 10 kg\u003c\/li\u003e\n\n\u003cli data-start=\"503\" data-end=\"543\"\u003e\n\n\u003cstrong data-start=\"505\" data-end=\"531\"\u003eFiring temperature range:\u003c\/strong\u003e 1000–1300°C\u003c\/li\u003e\n\n\u003cli data-start=\"545\" data-end=\"602\"\u003e\n\n\u003cstrong data-start=\"547\" data-end=\"565\"\u003eGrog content:\u003c\/strong\u003e 25% white grog, grain size 0–0.5 mm\u003c\/li\u003e\n\n\u003cli data-start=\"604\" data-end=\"638\"\u003e\n\n\u003cstrong data-start=\"606\" data-end=\"627\"\u003eDrying shrinkage:\u003c\/strong\u003e approx. 5.0%\u003c\/li\u003e\n\n\u003cli data-start=\"640\" data-end=\"720\"\u003e\n\n\u003cstrong data-start=\"642\" data-end=\"661\"\u003eFiring shrinkage:\u003c\/strong\u003e 0.6% at 1000°C; 3.1% at 1100°C; 4.7% at 1200°C; 5.7% at 1300°C\u003c\/li\u003e\n\n\u003cli data-start=\"722\" data-end=\"810\"\u003e\n\n\u003cstrong data-start=\"724\" data-end=\"749\"\u003eWater absorption after firing:\u003c\/strong\u003e 16.8% at 1000°C; 12.1% at 1100°C; 5.6% at 1200°C; 2.5% at 1300°C\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"814\" data-end=\"1244\"\u003eIt works best for hand modeling, slab work, sculpture, decorative vessels, and forms where the natural pattern of the clay is to remain visible. Partial glazing, transparent glazes, or leaving fragments of raw bisque allow the Vintage effect to be well exposed. The marbled pattern makes each piece unique, which is a frequent selling point in artistic ceramics.\u003c\/p\u003e\n\u003cp data-start=\"1246\" data-end=\"1507\"\u003e\u003csmall data-start=\"1246\" data-end=\"1507\"\u003eThe parameters given are approximate. The final color, shrinkage, water absorption, and glaze behavior depend on the kiln, atmosphere, soaking time, and firing curve. Before making a larger series, we recommend a technological test with the selected clay and glaze.\u003c\/small\u003e\u003c\/p\u003e","brand":"Witgert","offers":[{"title":"Default Title","offer_id":54394313965895,"sku":"W-29SF2505","price":79.9,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/2423\/0853\/files\/ChatGPTImage24lip2026-16-22-13-_1.png?v=1787957719","url":"https:\/\/alike.live\/en\/products\/masa-witgert-29-sf-25-0-0-5mm-vintage-10kg","provider":"Alike Pottery Studio","version":"1.0","type":"link"}