Use this page as a simple purchasing checklist before sending drawings for quotation. The goal is to reduce unclear requirements and make supplier comparison easier.
Key Points
- Material choice and blank size affect both machining time and waste.
- Tight tolerances and cosmetic finishes should be used where they matter, not everywhere.
- Clear files reduce back-and-forth and make quotation faster.
Why buyers check this before ordering
Custom metal parts are usually not quoted correctly from a product name alone. The supplier needs to understand the drawing, tolerance level, material grade, finish, quantity, and the part's real application. When these details are clear, quotation is faster and production risk is lower.
For early projects, the best approach is to send enough information for an engineering review, then let the supplier confirm manufacturing questions before price discussion. This protects both sides from hidden cost, wrong finish, missing dimensions, or packing issues.
Buyer Decision Snapshot
| Cost control | Separate material, setup, cycle time, secondary finish, inspection, and packaging so cost-reduction discussions remain practical. |
|---|---|
| Evidence to request | Clarified drawing questions, material and finish confirmation, sample approval approach, and inspection records appropriate to the part. |
Fast RFQ Checklist
| Technical files | CAD model, 2D drawing, photos, sample references, or assembly images. |
|---|---|
| Part requirements | Material, tolerance, surface finish, quantity, application, and inspection expectations. |
| Buyer notes | Target market, packaging, shipment timing, and any product development or assembly needs. |
| Supplier questions | Ask how the supplier reviews drawings, confirms critical dimensions, controls finish, and handles sample approval before batch production. |
Common mistakes to avoid
- Sending only a photo when the part requires tight dimensions or assembly fit.
- Using tight tolerances on every dimension instead of only critical areas.
- Leaving surface finish, masking, thread protection, or packaging requirements until after quotation.
FAQ
| Can Hasun quote without a 3D model? | Yes, but a 3D model plus 2D drawing is better for complex CNC parts. Photos or samples can help when the project is still early. |
|---|---|
| What makes the quotation faster? | Clear material, finish, quantity, key dimensions, application, and inspection requirements reduce back-and-forth. |
| Can this support prototype and batch orders? | Yes. RFQ details should explain whether the project is for prototype validation, pilot run, or repeat batch production. |
Need a drawing review?
Send your files and Hasun will check the manufacturability and quotation details.
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