Compare CNC machining quotations
Compare quotations against the same drawing revision and model, with matching material, finish, quantity, arrival date and acceptance records. Ask for substitutions or geometry changes as separately quoted alternatives.
On this page
Compare what the price includes
| Check | Compare | Resolve |
|---|---|---|
| Drawing and quantity | Part number, revision, units and quantity per line. | Is this price for the current revision and requested quantity? |
| Material | Grade, condition, substitutions and required records. | Is the specified material included, or is an alternative proposed? |
| Machining and finish | Required features, treatments, masking and final dimensions. | Which operations or treatments are excluded? |
| Setup and other charges | Programming, setup, tooling and special documentation where quoted separately. | Which charges are one-time, recurring or dependent on a repeat order? |
| Inspection | Features checked, sampling, methods and report format. | Are the requested acceptance records included? |
| Packing and transport | Surface protection, pack labels, delivery term and named place. | Who pays for transport, clearance, duties and taxes? |
| Schedule | Production start conditions, dispatch and transit assumptions. | Does the quoted time end at completion, dispatch or arrival? |
| Commercial terms | Currency, payment stages, quote validity and treatment of changes. | Which terms need written agreement before the order? |
Resolve exceptions before awarding the order
Ask for written confirmation of missing items. Keep the original requirement, proposed exception and agreed decision together, especially when a finish or inspection record is omitted from the quote.
Total cost includes separately quoted charges and delivery responsibilities. Ask for a revised quote for unpriced items instead of estimating an allowance. An earlier sample approval may need review if the drawing or material changes.
One quotation includes finishing; another leaves it open
Suppose two suppliers quote the same aluminum housing, but only one includes anodizing and final bore inspection. The unit prices describe different work. The second offer needs a price for the required treatment and checks, or a clear agreement that someone else will provide them.
Compare the same drawing revision, final finish and accepted dimensions. For an omitted treatment, obtain its price, identify who arranges it and record the effect on the schedule. An assumed finishing allowance added to the lower price does not settle that scope.
Separate first-order charges from repeat-batch costs
Programming, workholding and setup can be included in the unit price or quoted separately. A first-order total and a repeat-order unit price are different comparison figures. Ask which charges apply to the stated batch and what conditions apply to any later release.
A larger batch or revised part can change the setup, tooling or inspection work. Compare the actual quantity and one-time charges in each offer, using the CNC machining cost guide to review the work behind those charges.
Check whether the price covers components or an assembly
For an indexing plunger, a body-and-pin price and a complete mechanism price describe different deliverables. The latter also needs the specified spring, retaining items, assembly work and agreed functional checks identified. A photograph of an assembled reference does not add those items to a quotation.
Resolve the supplied-item list in writing. For any separately arranged assembly or test, record the responsible party and the configuration they will receive. This is especially useful when the machined pieces will be accepted before they are built into the customer's equipment.
Keep the agreed scope with the order
Keep the accepted quotation reference and date with the drawing revision, quantity, approved exceptions and delivery basis. The agreement should explain how later changes affect price, schedule and acceptance. LZZ’s order process follows these decisions from drawing review through delivery.
