Introducing the new SoliMould The difference between these moulds and others really is Black and White. Milled from solid HDPE blocks means no seams or joints that can leak, they are hard-wearing and will not deteriorate from multiple uses with resin. Each cavity in the Solimould Quad is 20 x 20 x 150mm the XL being 20x20x200mm with a very slight taper on the sides to ease removal. This taper is around 0.25mm and not as much as some others may have you believe. Also in tests we found the Solimould to use less resin than most other brands on the market and even less that many of the dedicated silicone moulds when casting sierra blanks. The Quad includes a set of 4 large and 4 small bungs to allow for tube in casting.