Prototypes and first articles
The first one, made properly, with the process documented so the hundredth is not an adventure. Manufacturability feedback comes back with the quote, not after the failure.
Most shops can hold a tolerance on a good day. The question is whether the hundredth piece matches the first, and whether anyone can tell you why when it doesn't. We machine parts, and we understand the machines and processes behind them — which is a different conversation.
The first one, made properly, with the process documented so the hundredth is not an adventure. Manufacturability feedback comes back with the quote, not after the failure.
Repeat work with the process locked down — tooling, workholding, tool life and inspection all settled before the run rather than during it.
Your capacity is full, or a job has gone wrong somewhere else and needs to land somewhere it will not. Both are normal here.
The alloys that eat inserts and the geometry that chatters. This is where the applications side of the business pays for itself.
Moving an existing part onto a different platform — program translation, workholding, tooling and a prove-out package, so it arrives production-ready.
Driven tools and secondary spindles used so parts come off finished, rather than accumulating tolerance across three separate operations.
If a feature is going to be expensive or fragile, you hear it while it can still be changed — not after the first article fails.
How it will be held, what will cut it, how it gets inspected. A number with no process behind it is a guess wearing a suit.
The date we can actually hit, including material. We would rather lose the job than miss the date.
The method the tolerance calls for, agreed up front rather than argued about at receiving.
Print or STEP, material, quantity and the date. Prototype, production or a job that has gone sideways — all three land in the same place.