The Ideal for central spruces. Fully refined to eliminate impurities. The rods burn out quickly without expansion or residue.
- Dark Green: Hardest wax sprue rod, featuring our highest rigidity and stability. Ideal for the largest lost wax assemblies.
- Light Green: A medium hard spruce rod which is touch and rigid. Perfect for general-purpose casting.
- Light Blue: Combines flexibility and sufficient rigidity for sprueing and mounting wax patterns. Most often preferred by those casting larger rings and other pieces of jewelry.
- Red: Most flexible wax sprue rod featuring a regular hardness and a low melting temperature.
