Required Specifications of the Machine The system must support experimentation, alloy development, process monitoring, and production of high-fidelity complex geometry metallic parts. Build Volume ● Minimum required: 100 × 100 × 100 mm³ ● Preferred: ≥ 250 × 250 × 250 mm³ ● Optional: Interchangeable build volume modules or inserts (e.g., 100 × 100 mm for R&D) Materials Capability The system must be capable of printing with both ferrous and non-ferrous alloys, including but not limited to the following. In addition, the system should allow for rapid material changeovers with minimal risk of cross contamination. ● Ferrous Alloys: o Low alloy steels (e.g., 4140, 4340) o Stainless steels (e.g., 316L, 17-4PH, 15-5PH) ● Non-Ferrous Alloys: o Nickel-based alloys: IN718, IN625, MARM247 and others o Titanium alloys: Ti6Al4V Grade 5 and ELI & others o Aluminum alloys: AlSi10Mg and others o Copper alloys: Cu, CuCrZr o Tungsten and Refractory metals: W, Mo, Ta (as supported by manufacturer) Laser System ● Power (minimum of 400w); preferred 700 W or 1 kW (to enable melting refractory metals) ● Number of lasers: Single (required); dual laser configuration (optional) ● Cooling (water or hybrid cooled; internal/external) ● Beam Delivery (standard galvo or better – allowing for focus control) ● Beam Spot Size control (specify range) (allowing for preheat before melting)
