A foundry needs seven things to produce a firm quote: a 2D drawing with tolerances and a revision level, a 3D model in a neutral format, the alloy or an approved equivalent, both the estimated annual usage and the first-order quantity, the machining scope, any required inspection records, and the destination with an Incoterm. Anything missing is replaced by an assumption, and the assumption is priced conservatively.
The Minimum Quotable Package
| Item | What it decides |
|---|---|
| 2D drawing with revision level | Which version governs, plus tolerances, datums and notes |
| 3D model (STEP) | Geometry, wall sections, feeding and gating study |
| Alloy or approved equivalent | Melt availability, properties, heat treatment |
| Tolerance grade and critical features | Tooling class, process control, scrap rate |
| Annual usage and first-order quantity | Process selection and tooling amortization |
| Machining scope | Whether the shop machines, subcontracts, or ships as-cast |
| Records (FAI, PPAP, certificates) | Inspection cost and calendar time |
| Destination and Incoterm | Freight, duty, and who carries them |
Why Each Omission Costs You
Missing quantity is the most common gap. Tooling is amortized across the parts that follow it, so a shop that does not know your volume cannot answer the question you actually asked.
Missing machining scope is the most expensive gap. "Machined" means every feature to one shop and the listed features to another, and that single ambiguity produces the widest spread in a quote set.
Missing records are the slowest gap. First article inspection, PPAP level, material certificates and certificates of conformance all carry real cost. A foundry that discovers them after quoting will requote, and you lose two weeks finding that out.
A Test Before You Send
Ask whether a shop that has never spoken to you could produce a firm price from the package alone. If the answer is no, you are opening a conversation rather than issuing a request for quote. Both are legitimate, but they get different response rates, and suppliers triage incoming requests on exactly this kind of clarity.
How Buyer24 Helps
Buyer24 keeps every request structured the same way, so the same fields go out to every foundry and the responses come back into one comparison view regardless of format. Get started →
FAQ
Do I need to specify the casting process?
Not always. If you know the process, state it. If you do not, say the requirement is open and let the foundries propose, since sand, permanent mould and high-pressure die casting price very differently at different volumes and one of them may suggest a cheaper route.
Should I include a target price?
It is optional and it cuts both ways. A target price helps a shop tell you quickly whether the part is worth quoting, but it also anchors the response. Include it when you want a fast qualify or disqualify, omit it when you want a clean market read.
How many foundries should receive the package?
Three to five qualified shops is usually enough to price a specified part. A request that visibly went to fifteen foundries reads as a price-fishing exercise and lowers the quality of the responses you get back.
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