The Ultimaker Metal Expansion Kit enables printing with metal composite filaments on compatible Ultimaker 3D printers, including the S3, S5, and S7 models. This kit includes a hardened steel 0.4 mm nozzle specifically designed for abrasive materials, providing enhanced durability and wear resistance during extended printing sessions. The inclusion of Ultrafuse Support Layer material ensures reliable support structure printing that can be easily removed after completion. This expansion kit transforms standard Ultimaker printers into capable metal printing systems without requiring extensive hardware modifications. The hardened steel construction maintains precise dimensional accuracy throughout prolonged use with demanding metal composite filaments. Installation follows standard Ultimaker procedures with comprehensive documentation provided. This kit represents a cost-effective solution for adding metal printing capabilities to existing Ultimaker systems, supporting various metal composite materials available in the Ultimaker ecosystem. The components are manufactured to Ultimaker's quality standards, ensuring compatibility and reliable performance. This expansion maintains the printer's original precision and reliability while expanding material capabilities. The kit is suitable for professional applications requiring metal-like properties in printed parts, including functional prototypes, tooling components, and end-use parts. All components are packaged securely with appropriate protective materials to prevent damage during shipping and storage. The expansion kit requires basic technical knowledge for installation but does not demand specialized tools or advanced expertise. This product enables users to explore metal composite printing while maintaining the reliability and user experience of their Ultimaker system.