{"product_id":"genie-crafts-half-foam-ball-2-pack-white-4-inch-half-spheres-stack-to-8-inch-smooth-paintable-polystyrene-for-crafts","title":"Genie Crafts Half Foam Ball 2-Pack — White 4-inch Half-Spheres (Stack to 8-inch) • Smooth Paintable Polystyrene for Crafts","description":"\u003cp\u003e\u003cstrong\u003eThese Genie Crafts half foam balls are lightweight, smooth white polystyrene domes sold as a 2-pack that can be used separately as 4-inch half-spheres or glued together to form an 8-inch ball for crafts and models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you want a simple, blank canvas for DIY decorations, school projects, floral arrangements, or party centrepieces, these half spheres give you a sturdy, paintable surface that’s easy to cut, sand, glue, or cover. The set includes two identical white half-domes sized so they stack into a full 7.8 x 7.8 x 3.9-inch sphere. Their smooth finish accepts paint, fabric, hot glue and embellishments without extra priming in most hobby use cases.\u003c\/p\u003e\n\n\u003ch3\u003eHow can I use these foam halves in my craft projects?\u003c\/h3\u003e\n\u003cp\u003eThese half domes are extremely versatile: use them individually as rounded bases or combine them to create a full sphere. They work well for floral foam alternatives, faux cakes, model scenery, and kids’ art projects because they are lightweight and easy to manipulate.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGlue two halves to form a complete 8-inch ball for ornaments or props.\u003c\/li\u003e\n  \u003cli\u003eUse single halves as dome-shaped bases for flower clusters or displays.\u003c\/li\u003e\n  \u003cli\u003ePaint, wrap with ribbon, or hot-glue decorations directly onto the smooth surface.\u003c\/li\u003e\n  \u003cli\u003eCarve or sand edges to create custom shapes for models and dioramas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and surface finishes work best on these half spheres?\u003c\/h3\u003e\n\u003cp\u003eThe spheres are made of polystyrene foam with a smooth outer skin that accepts many common craft treatments. Light coats of acrylic paint, fabric, glitter, and adhesives adhere well—just avoid solvents that dissolve polystyrene.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWater-based acrylics and craft paints for crisp colour and quick drying.\u003c\/li\u003e\n  \u003cli\u003eHot glue, PVA glue, and craft adhesives for attaching decorations.\u003c\/li\u003e\n  \u003cli\u003eTextiles, faux flowers, ribbons, and paper mache for custom textures.\u003c\/li\u003e\n  \u003cli\u003eFine grit sanding for smoothing or shaping without tearing the surface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I cut, join, and finish the halves without damaging them?\u003c\/h3\u003e\n\u003cp\u003eCutting and joining are straightforward with the right tools and techniques. Use a sharp craft knife or hot wire cutter for clean cuts, and secure assemblies with glue appropriate for foam to avoid melting or pitting the surface.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eScore and slice slowly with a sharp blade for accurate edges.\u003c\/li\u003e\n  \u003cli\u003eUse foam-safe adhesives or water-based glues to join parts reliably.\u003c\/li\u003e\n  \u003cli\u003eClamp or hold pieces briefly while glue sets to ensure a tight seam.\u003c\/li\u003e\n  \u003cli\u003eUse a light spray sealant or primer before heavy painting for extra durability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat sizes and dimensions should I expect for planning projects?\u003c\/h3\u003e\n\u003cp\u003eEach half dome measures roughly as half of a 7.8 x 7.8 x 3.9-inch sphere when assembled, offering predictable scale for centrepieces or scaled models. Their uniform size makes them easy to plan around for multiples or matching sets.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle half-dome usable as a 4-inch rounded base.\u003c\/li\u003e\n  \u003cli\u003eTwo halves combined form an approximately 8-inch diameter sphere.\u003c\/li\u003e\n  \u003cli\u003eLightweight for hanging decorations or mobile projects.\u003c\/li\u003e\n  \u003cli\u003eEasily trimmed to smaller diameters or shaped into custom forms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? These Genie Crafts foam half spheres are ideal for hobbyists, teachers, event planners, parents and kids who need an affordable, paintable base for decorations, classroom projects, wedding centrepieces, or seasonal décor. If you want a clean, easy-to-customize foam form that’s simple to paint, glue and modify, this 2-pack provides two ready-to-decorate domes that save time and give consistent results for both single-use events and repeat craft activities.\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 paint these foam halves with acrylic paint?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Water-based acrylics work well and dry quickly on the smooth polystyrene surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are the halves safe to cut with a craft knife?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Use a sharp blade or hot wire cutter and work slowly for clean, safe cuts.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Genie Crafts","offers":[{"title":"Default Title","offer_id":55254580527441,"sku":"B07K7JCDQB","price":51.52,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/genie-crafts-front-packaging-half-spheres.jpg?v=1791680961","url":"https:\/\/craftiche.co.uk\/products\/genie-crafts-half-foam-ball-2-pack-white-4-inch-half-spheres-stack-to-8-inch-smooth-paintable-polystyrene-for-crafts","provider":"Craftiche","version":"1.0","type":"link"}