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.
99 articles8 case studiesUpdated Oct 14, 2026
Polypropylene Living Hinge Design: An Application Study in Mold Flow and Fatigue Testing
An illustrative engineering study for polypropylene living hinge design, covering material selection, hinge geometry, gate and flow analysis, and a reproducible fatigue test plan.
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Snap-Fit Design for Injection-Molded Parts: Strain, Assembly Force and Fatigue
A practical snap-fit design guide covering cantilever strain, assembly force, material behavior, mold release, fatigue, and molded-part validation.
Threaded Insert Pull-Out Strength: An Application Study for Injection-Molded Housings
An illustrative engineering study for defining, testing, and diagnosing threaded insert pull-out strength in injection-molded plastic housings.
Injection Molding Draft Angle: Guidelines for Textured Surfaces and Deep Features
Select draft for textured surfaces and deep features, calculate taper at functional dimensions, and build a practical CAD and trial-validation checklist.
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One-Sided Burr Case Study: 7 Essential Checks for a Safe Fix
An illustrative engineering case study showing how asymmetric punch-to-die clearance can be investigated without destroying evidence through premature regrinding.
Mold Transfer Checklist: 7 Essential Gates for a Safe Move
A practical injection mold transfer checklist covering ownership, condition, machine fit, production continuity, process validation and formal release at the receiving plant.
Die Spare Parts Case Study: The Best Way to Cut Press Downtime by 63%
A stamping plant running 40 progressive dies from several toolmakers lost dozens of press hours a month waiting for broken punches and inserts. A die spare...
Sensor Housing Case Study: Fixing a 4% Leak Failure Rate With Insert Molding
An automotive sensor housing with insert-molded terminals was failing leak tests after thermal shock. Failure analysis, a redesigned lead frame, a new gate and a heated,...
LSR Mold Case Study: 32-Cavity Medical Check Valve Success Story
A medical device OEM was hand-trimming flash from a silicone check valve made in an 8-cavity tool. Our 32-cavity cold runner LSR mold removed the trimming,...
Bipolar Plate Stamping Case Study: 3 Forming Problems We Solved in 0.1 mm Steel
A fuel cell stack developer's metallic bipolar plate was cracking at the channel corners and failing flatness. A two-stage forming die, new radii and a calibrated...
Terminal Stamping Case Study: A 1,200 SPM Progressive Die Success Story
An automotive connector maker needed four times the output from its terminal stamping line and a capable process for PPAP. This is how our die team...
Springback in Metal Stamping: 7 Best Ways to Control It in the Die
Why stamped parts spring back after bending, how to estimate springback from material and bend geometry, and the die design methods that hold angles and flanges...
Carbide Punch vs Tool Steel Punch: 6 Factors for the Best Choice
Carbide punch or tool steel punch? A practical comparison of D2, M2, PM high speed steel and tungsten carbide grades: hardness, toughness, clearance, wear life, regrinding...
Copper Busbar Manufacturing: 8 Best Practices for EV Battery Packs
How a copper busbar for an EV battery pack is specified and made: material and temper, current sizing, skin effect, stamping and bending tolerances, plating, insulation,...
Press-Fit Pin Guide: 9 Best Practices for Reliable PCB Connections
An engineering guide to the press-fit pin: compliant zone design, PCB hole and plating specs, insertion and retention forces, materials, progressive die stamping and IEC 60352-5...
Mold Steel Guide: 7 Best Grades for Injection Molds (P20 to S136)
How to choose mold steel for an injection mold: hardness, polish, corrosion resistance, heat transfer and cost for P20, 718H, NAK80, S136, H13 and D2, with...
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