{"product_id":"osbang-plaster-casting-powder-5000g-fast-curing-beginner-friendly-paint-ready-finish","title":"OSBANG Plaster Casting Powder 5000g — Fast-Curing, Beginner-Friendly, Paint-Ready Finish","description":"\u003cp\u003e\u003cstrong\u003eOSBANG Plaster Casting Powder 5000g is a water-activated, fast-curing plaster mix designed for safe, smooth, and beginner-friendly casting with typical demolding around 20–30 minutes.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you're making small figurines, decorative tiles, or resin mould castings, this plaster powder provides a reliable, low-odour base that sets quickly and yields fine surface detail. Formulated from natural materials, the mix is easy to measure and stir, produces minimal bubbles, and creates a porous, paint-ready surface that accepts sealers, paints, and finishes.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly will OSBANG plaster set and when can I demold?\u003c\/h3\u003e\n\n\u003cp\u003eSet and demold times depend on the water-to-powder ratio and the size of your mould, but this plaster is formulated for fast curing compared with many resins. A common working guideline is a 10:3 (powder:water by weight) ratio for quick initial set and a recommended demold window of about 25–30 minutes for small to medium castings.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTypical full cure time: around 2 hours (varies by thickness and ambient temperature).\u003c\/li\u003e\n  \u003cli\u003eRecommended demold: 20–30 minutes for well-formed details; do not force demold before full cure.\u003c\/li\u003e\n  \u003cli\u003eAdjusting ratio: higher powder concentration speeds set; more water lengthens working time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I mix and pour OSBANG plaster for best results?\u003c\/h3\u003e\n\n\u003cp\u003eMix the plaster by weight for consistent results — the suggested starting ratio is 10 parts powder to 3 parts water. Stir until a smooth, lump-free paste forms, pour into your mould, and tap lightly to release trapped air; the formula minimizes bubbles when mixed properly.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMixing ratio: start at 10:3 powder:water by weight; modify slightly to control working time.\u003c\/li\u003e\n  \u003cli\u003eTechnique: slow folding motion to reduce entrained air, then tap or vibrate the mould.\u003c\/li\u003e\n  \u003cli\u003eMould prep: use clean, dry resin or silicone moulds; apply a release if desired for complex shapes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill my finished piece be paintable or waterproof?\u003c\/h3\u003e\n\n\u003cp\u003eCured plaster is porous and not inherently waterproof, but it accepts paints, inks, and sealers very well. To protect pieces from moisture or give a glossy finish, apply sealers such as acrylic varnish, wax sealer, or polyurethane after the plaster has fully cured and dried.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePorosity: cured surface is porous and ideal for gluing, painting, and finishing.\u003c\/li\u003e\n  \u003cli\u003eSealing options: acrylic sealer, varnish, wax, or polyurethane for water resistance.\u003c\/li\u003e\n  \u003cli\u003eFinishing tip: sand lightly to smooth edges before sealing for a refined result.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes OSBANG plaster friendly for beginners and hobbyists?\u003c\/h3\u003e\n\n\u003cp\u003eOSBANG emphasizes ease of use with a clear mixing ratio, low odour, minimal bubble formation, and predictable setting times. The package size (5,000 g \/ 176 oz) gives enough material for multiple projects, while the straightforward workflow suits classrooms, craft studios, and home DIYers alike.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eLow-odour formula for comfortable indoor use.\u003c\/li\u003e\n  \u003cli\u003eFast curing so projects progress quickly from pour to finish.\u003c\/li\u003e\n  \u003cli\u003eLarge 5000 g quantity supports multiple casts or larger items.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? OSBANG Plaster Casting Powder 5000g is ideal for hobbyists, craft instructors, and makers who need a dependable, fast-setting plaster for casting small sculptures, mould reproductions, decorative tiles, and mixed-media projects. It suits beginners who want a predictable mixing ratio and experienced artists who value fine detail reproduction and quick turnaround. Remember to seal cured pieces if you need water resistance or a polished finish.\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: What is the correct mixing ratio for OSBANG plaster?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Start with a 10:3 powder to water ratio by weight; adjust slightly to speed or slow curing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the cured plaster waterproof?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — cured plaster is porous and should be sealed with acrylic varnish, wax, or polyurethane for water resistance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"OSBANG","offers":[{"title":"Default Title","offer_id":55301035753809,"sku":"B0F2H881JY","price":104.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/osbang-front-packaging-5000g.jpg?v=1791976960","url":"https:\/\/craftiche.co.uk\/products\/osbang-plaster-casting-powder-5000g-fast-curing-beginner-friendly-paint-ready-finish","provider":"Craftiche","version":"1.0","type":"link"}