DRAWINGS & RFQ · SYD PRECISION
This CNC machining drawing checklist helps you explain both the shape of the part and the requirements for accepting it. Sending a clear drawing package at the start reduces repeated questions and makes competing quotations easier to compare.
Send the current model and dimensioned drawing, identify material and quantity, mark critical tolerances, describe the finish and state your delivery and inspection needs. Use the same part number and revision across the package.
1. Keep the model and drawing consistent
A neutral 3D model such as STEP helps communicate geometry. A readable PDF drawing communicates dimensions, tolerances and requirements that may not be fully defined in the model. Include both when available, and identify which revision is approved for quotation.
For a drawing-led inquiry without a 3D model, supply enough views and dimensions to define the part. Flag any missing information. If the drawing and model disagree, ask for clarification before manufacture rather than assuming one automatically takes priority.
2. Complete the CNC machining drawing checklist
Material and condition
State the alloy or grade and any required temper, hardness or heat treatment. If an alternative is acceptable, name it or request a proposed option for approval. Add material certification requirements to the inquiry rather than after the order is placed.
Dimensions, fits and reference features
Mark critical mating dimensions and the surfaces used to locate the component. State units, general tolerances and any feature-specific requirements. For threads, provide the thread designation and the necessary depth information. Avoid using an image or a rough sketch as the only definition of a critical fit.
Surface finish and finishing operations
Distinguish the required machined texture from a later coating or treatment. Identify cosmetic faces, masking areas and dimensions that must be accepted after finishing. For an anodized part, specify the applicable coating requirements and any color acceptance reference.
3. Include the commercial and inspection scope
| Information | What to include | Why it matters |
|---|---|---|
| Part identity | Part number, revision and matching filenames | Prevents quotation against the wrong version |
| Quantity | Prototype and production quantities, if different | Allows the setup and batch scope to be reviewed |
| Inspection | Critical features and requested documentation | Defines the acceptance and measurement scope |
| Delivery | Required date and destination | Separates manufacturing needs from shipping arrangements |
| Packaging | Protection of threads, finishes and mating faces | Communicates handling needs before shipment |
When comparing offers, check that each supplier has quoted the same revision, material, finish, inspection scope and delivery terms. A lower price does not necessarily describe the same package. Record any agreed exceptions in writing before production.
4. Send the package to SYD Precision
Use our Request a Quote form to describe the project and attach your file. For multiple files, use a ZIP archive within the displayed upload limit. If your package is larger or needs an NDA or a special transfer arrangement, email us first.
Tell us whether you need milled housings or brackets, turned shafts or bushings, or a review of both processes. Our quality page explains the inspection information to discuss with your inquiry.
Before you click send
- Open every attachment and confirm it is the intended revision.
- Check that dimensions, units and technical notes are readable.
- Include quantity, finish and the date you need the parts.
- Identify unanswered questions for review rather than leaving them implicit.
Ready to review your CNC project?
Send the latest drawing package and your requirements. We will review the scope before quotation.
Send Your CNC Inquiry →Prepared by SYD Precision as a practical inquiry checklist. Accepted file handling, achievable tolerances, documentation and lead time are confirmed for each project.