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Guides for buyers and engineers sourcing machined and sheet metal parts.

Jump to: Sourcing and nearshoring · Process guides · Design and reverse engineering · Logistics and customs · Quality · Industry guides · Glossary · FAQ

Sourcing and nearshoring

Sourcing Machined Parts from Turkey: A Guide for Tier 1 and Tier 2 SuppliersGuide

Nearshoring Turkey vs Asia vs Eastern Europe: How to Compare Machining SuppliersArticle

Extended Workbench for Tier 2 Suppliers: Using Overflow Capacity Without Losing ControlArticle

How to Qualify a Contract Machining Supplier in Turkey: Audit ChecklistArticle

Total Landed Cost of Machined Parts from Turkey: A Cost ModelArticle

Lead Time from Turkey to Europe: What Makes Up Delivery Time for Machined PartsArticle

China+1 for Machined Parts: Where Turkey Fits in a Dual-Sourcing StrategyArticle

Contract Manufacturing with a Turkish Supplier: NDA, IP and Warranty Clauses to AgreeArticle

Process guides

CNC Machining Tolerances: The Complete Handbook (ISO 2768, ISO 286, GD&T)Guide

Design for Manufacturability (DFM) for CNC Milling: Rules That Reduce CostGuide

ISO 2768-1 and ISO 2768-2 Explained: General Tolerance Classes with TablesArticle

Surface Roughness Ra vs Rz: Definitions, Conversion Caveats and Typical Machining FinishesArticle

ISO 286 Fits and IT Grades: H7/g6, Shaft and Hole Tolerances ExplainedArticle

Aluminium Alloys for CNC Machining: 6061, 6082, 7075 and 5083 ComparedArticle

Stainless Steel for Machined Parts: 1.4301, 1.4404, 1.4571 and MachinabilityArticle

Surface Treatments for Machined Parts: Anodizing, Zinc Plating, Passivation and Compliance (REACH, RoHS)Article

Design for Turned Parts: Rules for CNC Turning and Mill-TurnArticle

Sheet Metal Design Guide: Bend Radius, K-Factor, Laser Cutting and TolerancesArticle

Which Process for Which Part? CNC vs Sheet Metal vs Casting vs Welding Decision GuideArticle

Carbon and Alloy Steels for Machining: C45, 42CrMo4 and Heat Treatment OptionsArticle

Welded Assemblies: Weld Quality Levels (ISO 5817), ISO 3834 and EN 1090 ExplainedArticle

Cast Parts with Machining: Sand, Investment and Die Casting – Process Selection and Machining AllowanceArticle

Design and reverse engineering

Reverse Engineering Spare Parts: From Worn Part to Production-Ready DrawingGuide

3D Scanning vs Manual Measurement for Legacy Parts: What Each Method Can and Cannot Tell YouArticle

Technical Drawing Checklist Before You Outsource: ISO 128, GD&T and Title Block EssentialsArticle

Cost-Down Redesign for Machined Parts: Design-to-Cost Levers That WorkArticle

STEP, PDF and Native CAD: The Data Package a Supplier Needs to Quote AccuratelyArticle

Logistics and customs

EU–Türkiye Customs Union and Machined Parts: What Is Covered and What Is NotGuide

A.TR Movement Certificate: What It Proves, Who Issues It and When You Need ItArticle

Importing Machined Parts from Turkey into Germany: Customs Clearance, Import VAT and DocumentsArticle

Incoterms 2020 for Turkey–EU Shipments of Machined Parts: FCA, DAP, DDP ComparedArticle

Buying from Turkey as a UK Importer: UK–Turkey Trade Agreement and Proof of OriginArticle

CBAM and Steel or Aluminium Parts from Türkiye: Current Status and What Is Only ProposedArticle

HS Codes and Export Declarations for Custom Machined Parts from TürkiyeArticle

Road and Sea Routes from Bursa to Northern and Central Europe: Transport Options for Machined PartsArticle

Quality

Quality Documents for Machined Parts: 3.1 Certificates, FAI, PPAP and CoC ExplainedGuide

EN 10204 Inspection Certificates: 2.1, 2.2, 3.1 and 3.2 ComparedArticle

First Article Inspection (FAI): AS9102 and When to Use It Outside AerospaceArticle

PPAP for Tier 2 Suppliers: The Five Submission Levels and 18 ElementsArticle

ISO 9001, IATF 16949, AS9100, ISO 13485: Which Supplier Certificate Matters for Your PartArticle

Inspection Reports for Machined Parts: CMM, Measurement Uncertainty and CpkArticle

Handling Non-Conformances with an Overseas Supplier: 8D, Containment and ReturnsArticle

Industry guides

Machined Components for Cryogenic and Vacuum Systems: Materials, Cleanliness and Surface RequirementsArticle

Machined and Welded Parts for Special Machine Builders: Small Batches, Documentation and Lead TimeArticle

Machining for Semiconductor Equipment Suppliers: Precision, Materials and DocumentationArticle

Optomechanical Parts for Photonics and Laser Systems: Materials, Stability and Thermal ManagementArticle

Robotics and Automation Suppliers: Lightweight Machined Components and Small SeriesArticle

Automotive Tier 2 Machining from Turkey: Documentation and Supplier ExpectationsArticle

Sheet Metal and Welded Parts for Data Center Cooling: Weld Qualification and Leak TestingArticle

Welded Frames and Machined Parts for Agricultural and Construction MachineryArticle

Parts for Energy and Electrical Equipment: Copper Busbars, Enclosures and Wind ComponentsArticle

Hydraulic Manifolds and Valve Blocks: Machining, Cleanliness and Pressure TestingArticle

Machined Parts for Test, Measurement and Lab Equipment: Tolerances, Materials and DocumentationArticle

Glossary

Sourcing Glossary for Machined Parts: 60 Terms from A.TR to Tolerance GradesArticle

Glossary: Lohnfertigung (Contract Machining) and Verlängerte Werkbank (Extended Workbench)Article

FAQ

FAQ: Is Türkiye in the EU Customs Union and Do Machined Parts Attract Import Duty?Article

FAQ: Working with a Turkish Supplier – Quality, Language, Payment and DocumentsArticle

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Updated	2026-10-30