Invest in tooling. Or print-and-ship. Volume decides.

Depends on part complexity, material, and tooling type. Simple part, aluminum rapid tooling ($3,000), MJF nylon 3D print at $20/part: cross-over at 150 parts — below 150 use MJF, above 150 use injection. Complex part, steel production tooling ($40,000), same MJF cost: cross-over at 2,000 parts. For each project, calculate: [tooling cost ÷ (MJF cost per part − injection cost per part)] = break-even quantity. We can quote both to verify.

Aluminum rapid tooling: $3,000–12,000, 14 days lead time, 5,000–20,000 shot life, works for all standard thermoplastics. Steel production tooling: $15,000–80,000, 6–8 weeks lead time, 500,000+ shot life. Use aluminum for: production volumes under 5,000 pieces, uncertain market demand, design still refining, rapid time-to-market. Use steel for: committed production above 50,000 parts, optimal per-part cost, maximum tool life.

Yes — common product development path. Typical: 10–50 3D-printed prototypes → 50–500 3D-printed pilot → 500+ injection molded production. Design-for-manufacturing is important: parts designed for 3D printing (complex internal features, no draft) may require redesign for injection molding (draft angles, proper wall thickness, uniform cooling). We provide DFM review for this transition at no charge.

Injection molding: every thermoplastic (ABS, PC, PP, nylon, POM, PEEK, silicone) plus elastomers (TPE, TPU). Matches production material exactly. 3D printing (SLS/MJF): nylon PA12 and variants (glass-filled, carbon-filled). If your final product must be ABS, injection molding is the only production path. If nylon is acceptable, 3D printing stays competitive longer.

Injection molded parts match the tool surface — polished tool produces polished parts, textured tool produces textured parts. Ra 0.1 µm (optical) to Ra 10 µm (textured) achievable. 3D printed parts have inherent layer lines and powder texture — Ra 6–10 µm typical. For cosmetic consumer products, injection molding is much better. For industrial and mechanical parts where appearance is secondary, 3D printing is adequate.

Yes — increasingly common. Example: Launch product with 3D printed parts (bridge production while tooling builds). Once market demand is confirmed, switch to injection molding (lower per-part cost, better finish). Aluminum rapid tooling bridges this further — $3,000–8,000 for first 5,000 parts, then invest in steel production tooling if volume justifies. We handle all three approaches on single customer relationship.