supplier comparison, and delivery predictability. Engineers and procurement teams often struggle with
inconsistent quotes because essential project information isn’t provided, or suppliers don’t fully
understand part requirements.
An accurate quote helps avoid hidden costs, delivery delays, and quality disputes—setting your project
up for success from prototype to production.
At Kachi Precision Manufacturing, we have over 15 years of experience helping global OEMs
and engineering teams receive precise, transparent CNC quotes by guiding them through what information
suppliers truly need and how pricing is calculated.
Why Precision in CNC Quotes Matters
A CNC machining quote is more than a number—it reflects the complex interaction of design details,
material selection, tolerances, volume, and finishing requirements.
Inaccurate quotes often lead to:
- Budget overruns
- Production delays
- Miscommunication with suppliers
- Quality issues at delivery
When key technical details are missing, suppliers are forced to apply conservative assumptions,
increasing cost and uncertainty.
Step 1 — Prepare Complete Design Files
Include Both 3D Models and Detailed Drawings
One of the most common RFQ mistakes is submitting only a 3D CAD model without a detailed drawing.
For accurate quoting, provide:
- 3D CAD files (STEP or IGES preferred)
- 2D technical drawings with dimensions, tolerances, and notes
While 3D models define geometry, 2D drawings communicate design intent—tolerances, surface finishes,
hole callouts, and inspection requirements that directly affect machining strategy and cost.
Label Critical Tolerances and Functional Features
Not all features require tight tolerances. Clearly defining which dimensions are function-critical
allows suppliers to optimize cost without compromising performance.
At Kachi, we routinely provide DFM feedback during RFQ review to help optimize tolerances before
final pricing.
Step 2 — Specify Material and Quantity Clearly
Choose the Correct Material Grade
Material selection is one of the largest cost drivers in CNC machining. Different alloys and plastics
impact tool wear, cycle time, surface quality, and material availability.
Avoid vague descriptions like “steel” or “aluminum.” Instead, specify exact grades such as
Aluminum 6061-T6 or AISI 304 stainless steel.
Communicate Expected Quantity Ranges
Production volume directly influences unit pricing by spreading setup and tooling costs across
more parts.
- Prototype runs (1–10 pcs)
- Small batches (11–50 pcs)
- Medium volumes (50–200 pcs)
- Production quantities (200+ pcs)
Step 3 — Clarify Tolerances, Finishes, and Secondary Processes
Define Tolerances by Feature
Tight tolerances increase machining time, tooling requirements, and inspection effort. Clearly
specify tolerance bands only where functionally required.
Include Surface Finishes and Post-Processing
Any secondary processes—anodizing, heat treatment, polishing, or plating—should be included in the
initial RFQ to prevent cost discrepancies later.
Kachi’s quoting process ensures all secondary operations are accounted for upfront.
Step 4 — Define Timeline and Delivery Requirements
Specify Lead Time Expectations
Standard lead times generally reduce cost, while expedited orders require premium pricing.
Clear timelines allow suppliers to plan capacity accurately.
Confirm Delivery Location and Logistics
Shipping method, destination, and customs requirements influence total cost and scheduling.
Providing this information early improves quote accuracy.
Step 5 — Evaluate Quotes Beyond Price
Assess Technical Transparency
Reliable suppliers provide clear cost breakdowns including:
- Material costs
- Machining and setup
- Inspection and quality control
- Surface finishing
- Packaging and logistics
Watch for Hidden Assumptions
Some quotes exclude tooling changes or batch surcharges, leading to later revisions.
Kachi includes assumption logs and version control to ensure full transparency.
Advanced Tips for Faster, More Accurate Quotes
Use a Standard RFQ Checklist
- CAD models and drawings
- Material and grade
- Quantities and tolerances
- Surface finishes and secondary processes
- Lead time and delivery requirements
- Assembly or application notes
Maintain Drawing Version Control
Clearly labeled drawing versions prevent miscommunication and pricing drift when designs change.
Conclusion — Accurate Quotes Enable Predictable Manufacturing
Accurate CNC machining quotes result from detailed documentation, clear communication, and
engineering-driven supplier workflows. Mastering the quoting process reduces risk, cost, and
production uncertainty.
Ready for an Accurate CNC Machining Quote?
At Kachi Precision Manufacturing, we specialize in delivering transparent,
engineering-backed CNC quotes for projects of all sizes.
✔ Free DFM review
✔ Detailed cost breakdown
✔ Fast response (24–72 hours)
✔ NDA-protected communication
Post time: Feb-06-2026
