Anodizing Aluminum Parts: What Buyers Should Specify Before Production
How to specify anodized aluminum parts — colour, cosmetic faces, masking and mating finishes — from a factory whose range includes anodized CNC parts and heatsinks.
Engineering Blog
Guides & Design Notes
Process guides, design checklists and cost explainers for buyers of custom metal parts — written from the production floor, not a textbook.
Sheet Metal Design Guide: Bends, Holes and the Decisions That Set Cost
A sheet metal design guide for aluminum parts — bend placement, hole distances, drawn vs bent choices — from the factory behind AL6061/6063 sheet metal fabrication.
Injection Molding vs Die Casting: Questions Buyers Actually Ask
Injection molding vs die casting, answered question by question: material, strength, tooling, unit cost and when each process wins — from a factory running both.
CNC Machining Tolerances Explained — Without a Single Company Promise
What machining tolerances mean, why tighter costs more, and how to specify them selectively. A concepts guide — deliberately free of any supplier tolerance claims.
The Deep Drawing Process: How Flat Sheet Becomes a Seamless Part
How deep drawing works — blank, punch, draw stages, work hardening — and how to judge whether your stainless part should be drawn, from Runpeng's stamping division.
Aluminum Extrusion Design Guide: Sections, Walls and Finishes
Designing aluminum extrusion profiles — section simplicity, wall consistency, hollow vs solid, and finishing — from a range built on custom 6061/6063 extrusions.
Die Casting Defects: Porosity, Cold Shuts, Flash — and What Prevents Them
The common die casting defects explained — porosity, cold shuts, misruns, flash, soldering — with the die design and process decisions that prevent them.
What Actually Drives CNC Machining Cost (It Is Not Just the Hourly Rate)
The real drivers of CNC machining cost — material, operations, setups, tolerances, finishing and batch size — and how buyers can design cost out. No prices, just structure.
Die Casting Design Guidelines: Walls, Draft, Radii and Ribs
Practical die casting design guidelines — wall uniformity, draft, radii, ribs, bosses and parting lines — for ADC12/A380 parts that cast, eject and finish well.
Metal Stamping Design Guide: Designing Parts the Press Will Love
Design guidance for stamped metal parts — feature placement, bend logic, draw awareness, material behaviour in aluminum and stainless — from an in-house die shop.