Engineering insights
Guides, data and case studies from our tooling engineers
Practical articles on stamping dies, injection molds, tooling spare parts and sourcing from China, written by the engineers who design and build them in Dongguan.
115 articles16 case studiesUpdated Nov 2, 2026
Stamped Spring Clip Fatigue: An Application Study in Material and Heat Treatment
Plan stamped spring clip fatigue testing with material and heat-treatment records, checked load-cycle calculations and a practical component validation matrix.
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Bend Allowance and K-Factor: Developing Flat Patterns for Stamped Sheet Metal Parts
Calculate sheet metal bend allowance and K-factor with worked flat-pattern examples, bend deduction checks, sensitivity tables and a coupon validation plan.
Aluminum Stamping Galling: An Application Study in Lubrication and Surface Control
Investigate aluminum stamping galling with a controlled lubricant and tool-surface study, checked application-mass examples and practical acceptance records.
Metal Stamping vs Laser Cutting: Selecting a Process by Geometry and Production Volume
Compare complete stamping and laser-cutting routes by geometry, delivered-part requirements, revision stability and quantity. Includes hypothetical break-even calculations and a practical quote-review checklist.
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Deep-Drawn Stainless Steel Cups: An Application Study in Wall Thinning Control
An illustrative engineering study of stainless-steel cup wall thinning, with a hypothetical thickness map, checked loss calculations, diagnostic questions and a proposed trial and inspection record.
SPI Surface Finish Chart: Selecting Mold Finishes for Functional and Cosmetic Parts
A source-specific SPI preparation chart, checked roughness conversions and a practical guide to finish zoning, material samples and inspection acceptance.
Undercut Injection Molding: An Application Study in Side-Action Tooling for Enclosures
An illustrative enclosure study with checked clearance and angle-pin travel calculations, release-concept comparisons and a tooling inspection and approval checklist.
Nylon Moisture Absorption: Drying and Conditioning Injection-Molded Parts
A grade-specific guide to nylon resin drying and molded-part conditioning, with moisture-state comparisons, checked mass calculations and an inspection approval checklist.
O-Ring Groove Design in Molded Plastic: An Application Study in Sealing and Inspection
An illustrative face-seal study with checked squeeze and gland-fill tolerance calculations, an original depth-definition sketch, and a molded-part inspection and release plan.
Scientific Injection Molding Process Window: Building Repeatable Part Quality
A practical process-window guide covering traceable baselines, a hypothetical 70-part trial matrix, dimensional-margin arithmetic and documented production release.
Micro Gear Design for Injection Molding: An Application Study in Tooth Accuracy
An illustrative micro-gear study linking nominal geometry, tooth-accuracy requirements, cavity trials and repeatable inspection to a documented release decision.
ABS vs Polycarbonate: Selecting Materials for Injection-Molded Industrial Housings
A grade-specific ABS vs polycarbonate guide for industrial housings: interpret property methods, evaluate chemical exposure, calculate nominal mass and plan material release.
Injection Molding Burn Marks in Deep Ribs: A Venting Diagnostic Application Study
An illustrative diagnostic study for deep-rib burn marks: inspect the air-escape path, separate competing causes, plan controlled trials and retain cavity-specific evidence.
Injection Molding Rib Design: Balancing Stiffness, Wall Thickness and Moldability
A technical guide to molded rib geometry: interpret supplier thickness guidance, compare a hypothetical section, review the physical mold and plan structural, dimensional and appearance checks.
EV Battery Cell Spacer Design: An Application Study in Insulation and Molded Fit
An illustrative engineering study of EV battery cell spacer design: material evidence, insulation boundaries, checked tolerance examples, molded-fit validation and release records.
Injection Molding Gate Design: Selecting Locations for Functional Plastic Parts
A technical guide to injection molding gate design, covering location restrictions, gate concepts, flow and weld-line review, a checked geometric example, and approval evidence.
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