When should I choose 3D printing over CNC machining?
For organic geometries that CNC can't cut in reasonable setups (curved internal channels, lattices, overhangs). For quantities under ~20 where amortizing CNC setup is wasteful. For design-validation prototypes where you need the part in hand within 3 days. Otherwise, CNC is usually better for tolerance, surface finish, and production-grade material properties.
What file formats do you accept?
STL is the industry standard for 3D printing. STEP is also accepted and we convert in-house. For tight-tolerance metal DMLS, STEP is required because STL loses surface curvature data.
Can I get mill certifications on DMLS parts?
Yes. For AS9100D or ISO 13485 parts, we provide full powder-lot traceability, build-plate orientation records, and density sample verification. Budget 1–2 additional days for post-build QA documentation.
What's the cost crossover between SLS and injection molding?
Roughly 1,000 parts. Below that, SLS/MJF wins because no tooling is needed. Above that, injection molding becomes cheaper per-part even after amortizing tool cost. For 10,000+ parts, injection molding is always cheaper.