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RFQ File Guide

CAD Formats for Manufacturing: Choose Files Before Quoting

Use CAD formats for manufacturing that preserve geometry, critical dimensions, and revision intent for a disciplined RFQ review.

About SUUXIANG

From Drawing Review to Inspected Parts

Established in 2010, SUUXIANG is the international-facing brand of Dongguan SuuXiang Precision Mold Co., Ltd., based in Chang’an Town, Dongguan, Guangdong, China. Founded by legal representative XiaoCheng Huang, we help engineering, sourcing, and quality teams turn controlled drawings and models into inspected custom CNC parts, precision mold components, connector tooling, and die components.

For CAD formats for manufacturing, our review begins with usable production data, not file compatibility alone. We assess the 2D drawing, 3D model when available, critical dimensions, datums, material, heat treatment, surface requirements, quantity, and inspection expectations before aligning DFM with an appropriate machining route.

What distinguishes SUUXIANG is disciplined coordination across CNC milling and turning, multi-axis machining, EDM, precision grinding, fitting, and inspection. We keep revision information and verification requirements visible throughout the project, so process decisions and final documentation can be matched to the confirmed order and inspection plan.

2010
established
15+ years
precision manufacturing experience
2D + 3D
drawing-package review
From Drawing Review to Inspected Parts
File Selection Framework

How CAD Formats Affect CNC, EDM, and Grinding Planning

Choose files that communicate geometry, drawing requirements, revision status, and the process details needed for a disciplined manufacturing review.

Start With the Drawing

Use the 2D drawing to identify dimensions, datums, tolerances, threads, finishes, and inspection notes that geometry alone may not communicate.

Share Solid Geometry

A watertight solid model supports clearer CNC feature review, tool access checks, and material removal planning before machining routes are discussed.

Treat Meshes Carefully

Mesh files can visualize form, but faceted geometry may limit reliable evaluation of critical dimensions, surfaces, and machining allowances.

Clarify File Authority

Native files may preserve design history; neutral exchanges can ease collaboration. Submit the governing drawing and revision together to clarify intent.

Plan EDM and Grinding

For EDM and grinding, confirm wire paths, electrode needs, burn areas, grinding stock, heat-treatment sequence, and measurement requirements early.

File Selection Guide

CAD Formats for Manufacturing: Compare Use and Data Retention

Match geometry, drawing requirements, and process planning needs before submitting an RFQ.

SUUXIANG
Typical online-quoting workflow
STEP solids
✓ Preferred for CNC geometry review
✕ Upload requirements may vary
STEP AP242
✓ Review PMI with supporting drawing
✕ PMI handling may vary
Native CAD files
✓ Useful for design-history clarification
✕ Native support may vary
2D PDF drawings
✓ Controls dimensions and revision
✕ Drawing handling can vary by workflow
DXF profiles
✓ Useful for planar profile definition
✕ Process suitability depends on workflow
IGES geometry
✓ Review surfaces before process planning
✕ Translation issues may require repair
STL mesh files
✓ Use for reference, verify geometry
✕ Mesh resolution can limit review
Datum information
✓ Review datum strategy before machining
✕ Automated review may require additional context

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Drawing-Driven Production

CAD Formats for Precision Tooling Decisions

Select the process family that fits your drawing, model, critical dimensions, material requirements, and inspection expectations before requesting a quotation.

CNC Machining Services

CNC Machining Services

Precision CNC machining services begin with usable 2D drawings and, when available, native or neutral 3D models. Provide material, tolerances, datums, surface requirements, quantity, and revision status so the machining route and inspection plan can be reviewed.

Upload a Drawing
CNC Milling

CNC Milling

Custom CNC milling services support prismatic parts, plates, inserts, and features requiring controlled tool access. Include complete views, section details, datum references, thread specifications, corner conditions, and any critical flatness or positional requirements in the drawing package.

Upload a Drawing
CNC Turning

CNC Turning

Precision CNC turning services are suited to rotational components with diameters, bores, threads, grooves, and concentric relationships. Supply a dimensioned drawing that identifies datums, runout requirements, material condition, surface finish, and any secondary milling or EDM features.

Upload a Drawing
5-Axis Machining

5-Axis Machining

5-axis CNC machining can reduce setups for complex contours, angled holes, and multi-face geometry. A watertight 3D model should be paired with a controlled 2D drawing defining critical dimensions, datums, tolerances, inaccessible areas, and inspection priorities.

Upload a Drawing
Swiss & Micro Machining

Swiss & Micro Machining

Swiss machining and micro machining serve small-diameter, detailed components where feature sequence and handling affect results. State material, diameter limits, length-to-diameter relationships, tolerances, burr limits, surface requirements, and inspection method in the RFQ package.

Upload a Drawing
Wire & Sinker EDM

Wire & Sinker EDM

Wire EDM and sinker EDM services address hardened materials, fine profiles, deep ribs, sharp internal corners, and features beyond conventional cutter access. Drawings should identify wire paths, corner conditions, electrode-driven geometry, finish expectations, and applicable datum relationships.

Upload a Drawing
Precision Grinding

Precision Grinding

Precision surface and profile grinding is used to establish controlled flatness, parallelism, profile, and final stock conditions. Define grinding surfaces, allowable stock, hardness or heat-treatment state, critical dimensions, surface finish, and the measurement reference before release.

Upload a Drawing
Mold Core & Cavity Inserts

Mold Core & Cavity Inserts

Precision mold core and cavity inserts are configured from the molding application, mating geometry, material, cooling needs, and dimensional priorities. Submit part geometry, mold layout context, shrinkage assumptions, steel requirements, heat treatment, and critical cavity or core dimensions.

Upload a Drawing
Ejector & Ejection Components

Ejector & Ejection Components

Ejector pins, sleeves, and ejection components require clear alignment with the mold design and moving-part interfaces. Identify diameters, fits, head geometry, hardness requirements, coating or finish needs, travel conditions, and any anti-rotation or venting details.

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Core Pins, Guide & Locating Components

Core Pins, Guide & Locating Components

Core pins, guide pins, and locating components depend on fit class, datum strategy, wear conditions, and mating parts. Provide assembly context, hole and pin tolerances, engagement length, material or hardness requirements, and inspection criteria for functional dimensions.

Upload a Drawing
Slides, Lifters, Gates & Mold Accessories

Slides, Lifters, Gates & Mold Accessories

Mold slides, lifters, gates, and accessories should be reviewed as working mechanisms rather than isolated shapes. Include assembly files or relevant sections showing travel, interference risk, shutoff surfaces, wear areas, material requirements, and fitting expectations.

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Connector Mold Components

Connector Mold Components

Precision connector mold components often involve fine pitch, tightly controlled mating relationships, and EDM-dependent features. Provide connector geometry, cavity or core context, pin and terminal locations, tolerance stack requirements, material, surface condition, and measurement priorities.

Upload a Drawing
Stamping Die Components

Stamping Die Components

Precision stamping die components are specified around strip progression, punch-and-die clearance, alignment, wear, and replacement requirements. Include die-set context, material and hardness, critical profiles, surface needs, fit requirements, and revision-controlled drawings.

Upload a Drawing
Injection Mold Components, MIM, CIM & Overmolding Tooling

Injection Mold Components, MIM, CIM & Overmolding Tooling

Injection mold components and tooling for MIM, CIM, and overmolding require process-specific review of part geometry, material behavior, shrinkage, gating, ejection, and mating interfaces. Submit the molded-part model, tooling concept, material information, production intent, and critical functional dimensions.

Upload a Drawing
Machining Materials

Machining Materials

CNC machining materials should be selected against strength, corrosion resistance, machinability, stability, wear, and downstream heat-treatment requirements. State the exact grade, approved substitutes if any, material condition, certification expectations, and application environment with the RFQ.

Upload a Drawing
Surface Finishes & Heat Treatment

Surface Finishes & Heat Treatment

Surface finishing and heat treatment must be tied to function, dimensions, and sequence. Specify finish type, target roughness where relevant, coating areas, masking needs, hardness range, case depth if applicable, distortion concerns, and post-treatment inspection requirements.

Upload a Drawing
Quality, Metrology & Documentation

Quality, Metrology & Documentation

Precision inspection, metrology, and quality documentation should follow the drawing’s critical dimensions and agreed inspection plan. Identify required reports, sampling expectations, datum scheme, gauges or measurement methods, material records, revision controls, and any customer-specific documentation.

Upload a Drawing
Prototyping & Low-Volume Production

Prototyping & Low-Volume Production

Rapid prototyping and low-volume manufacturing benefit from an early review of quantity, material, tolerance priorities, and delivery target. Share the latest drawing and model, intended application, acceptable process alternatives, inspection needs, and expected revision or follow-on production path.

Upload a Drawing
RFQ Preparation

Prepare CAD Files Before RFQ Review

Give SUUXIANG the controlled technical package needed to assess process routes, inspection expectations, and quotation questions.

1

Send the 2D Drawing

Provide the released 2D drawing with revision, dimensions, datums, tolerances, surface requirements, and notes so SUUXIANG can establish the manufacturing baseline.

2

Include a Usable 3D Model

Attach a STEP model when available, plus the native file if design-history context matters. Identify the governing document if model and drawing differ.

3

Define Material and Quantity

State specified material, heat-treatment condition, quantity, and application context. These inputs help determine feasible process routes, sourcing needs, and production planning.

4

Flag Critical Quality Requirements

Mark critical dimensions, datum relationships, surface priorities, inspection methods, reporting needs, and mating-component concerns so review can focus on manufacturing and verification risks.

5

Confirm Delivery Requirements

Share the target delivery date, destination considerations, revision status, and any approval milestones. SUUXIANG can then coordinate review questions before quotation.

RFQ Preparation FAQ

FAQ: CAD Formats for Manufacturing and RFQ Submission

File choice matters, but the drawing, revision record, and inspection requirements define what must be manufactured and verified.

Which CAD formats for manufacturing should I send for CNC-machined parts?
For most CNC RFQs, send a neutral 3D solid model such as STEP together with the controlled 2D drawing. The model supports geometry and machining-access review; the drawing defines dimensions, datums, tolerances, threads, finishes, material, and revision. CAD files do not replace the drawing when requirements must be controlled.
Should I provide STEP or a native CAD file for manufacturing?
A STEP file is often practical for cross-system model exchange and CAM review. A native file can be useful when design history, assemblies, or feature intent must be clarified. Submit the controlled 2D drawing in either case, and identify the governing revision. SUUXIANG reviews the available package before confirming the manufacturing route.
Can I use DXF files for tooling components?
DXF can be useful for 2D profiles, wire-EDM contours, stamping features, or flat-part geometry. It should be clean, correctly scaled, and free of duplicate or construction geometry. For parts with 3D features, depth relationships, or complex datum requirements, include a 3D model and a dimensioned drawing alongside the DXF.
Do CAD formats for manufacturing include tolerance and GD&T requirements?
Some models may contain manufacturing annotations, but their transfer and interpretation should be confirmed during review. Provide a controlled drawing that clearly identifies critical dimensions, datum references, geometric tolerances, surface requirements, and any inspection-critical features. This gives the manufacturing and quality teams a common reference for machining, EDM, grinding, and inspection planning.
What should I include with an RFQ besides CAD formats for manufacturing?
Include the latest 2D drawing and 3D model when available, material and heat-treatment requirements, quantity, target delivery date, surface requirements, inspection or reporting needs, and revision status. Also note the application or mating-component context if it affects fit or function. These details support a more responsible DFM and critical-dimension review.
How do I prevent an outdated drawing from being manufactured?
Mark the governing revision clearly on the drawing and model filenames, provide a revision history when changes affect form, fit, or function, and identify any superseded files. Avoid sending multiple uncontrolled versions in one RFQ package. Before production, align the released documentation, critical dimensions, and inspection expectations with the order record.
Is an STL file enough for CNC machining?
Usually, an STL is not the preferred starting file for precision CNC work because it represents geometry as a mesh rather than a precise solid model. It may be helpful as supplemental reference, but send a STEP or native solid model and a controlled 2D drawing where possible. The review should confirm whether the supplied geometry is suitable for the required features and tolerances.
When should I request an inspection report with my drawing package?
Request reporting when critical dimensions, material condition, surface requirements, mating features, or customer quality procedures require documented verification. Identify the features to be reported, the measurement method if specified, sampling expectations, and any required format before production. SUUXIANG can align the inspection plan to the verified order requirements.

Upload Your Drawing for Manufacturing Review

Send your 2D drawing, 3D model, material, quantity, critical dimensions, and inspection needs for a disciplined DFM and manufacturing discussion.

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