A mold quote is never just a number—it’s a technical proposal backed by material science, machining strategy, and risk assessment. For any mold engineer, the first step is classifying the mold correctly: by cavity count, by injection type (two-plate vs. three-plate), and by steel grade. A standard two-plate mold with a single cavity can run 15–20% cheaper than a three-plate design with the same part geometry, but that saving often disappears if you need side actions or unscrewing cores. The real cost drivers are the number of parting lines, the cooling channel layout, and the expected cycle time—each one directly impacts the machine hour rate and the mold’s lifespan. When you move from classification to quoting, you have to factor in the steel’s hardness and pre-hardened condition. For example, P20 at 28–32 HRC is fine for low-volume prototypes, but for production runs above 100,000 shots, you’ll want H13 or S136, which can add 30–40% to the material cost. Don’t forget the hidden costs: heat treatment, polishing to SPI A-2 finish, and conformal cooling inserts. A realistic quote should also include a 5–8% contingency for unexpected electrode wear or wire EDM rework. In my experience, underquoting by 10% to win a job almost always leads to a loss once you account for trial shots and mold modifications. Finally, the quote must reflect the mold’s expected maintenance cycle. A well-designed mold with hardened inserts and standard off-the-shelf components (like DME or HASCO ejector pins) will cut downtime and replacement costs. But if you spec custom slides or lifters, you’re committing the buyer to a longer lead time and a higher per-part cost. The key is to be transparent about what the price does and does not include—especially for revisions after the first article inspection. For more practical mold sourcing and costing insights, visit MoldWorld (www.moldw.com) for a database of suppliers and technical guides that help you benchmark your quotes against the market.