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Injection Molding Blog | Plastic Mold Manufacturing Insights | JBRplas

Technical insights on plastic injection molding, mold manufacturing, material selection, and quality — from the JBRplas engineering team. Articles cover DFM …

Medical Molding Compliance — The Documentation Package Your Molder Should Provide
10/13 Medical Molding
Medical Molding Compliance — The Documentation Package Your Molder Should Provide

A molder’s ISO 13485 certificate is the first thing an OEM buyer checks and the last …

12 min Read
Precision Injection Molding in a Clean Room — Why Temperature and Humidity Decide Your Tolerances
10/09 Precision Molding
Precision Injection Molding in a Clean Room — Why Temperature and Humidity Decide Your Tolerances

A payment terminal housing we mold holds ±0.2mm across a 106mm card swipe path — a …

11 min Read
Family Mold Design Guide — Balancing Dissimilar Parts in One Tool
09/15 Family Mold
Family Mold Design Guide — Balancing Dissimilar Parts in One Tool

A product ships as a set: a connector, a rear cover, and a support bracket — three parts …

11 min Read
2K Mold Design Guide — Rotary, Core-Back, and Material Pairing for Two-Shot Tools
09/08 2K Mold Design
2K Mold Design Guide — Rotary, Core-Back, and Material Pairing for Two-Shot Tools

Two-shot molding is a process decision — the 2K mold is what makes that decision real. A …

9 min Read
China vs Mexico vs Vietnam Injection Molding — Cost and Supply Chain Comparison
09/01 Supplier Selection
China vs Mexico vs Vietnam Injection Molding — Cost and Supply Chain Comparison

An OEM sourcing director is evaluating three locations for a plastic housing program: …

5 min Read
Injection Mold Total Cost of Ownership — The Real Cost of a Cheap Mold
09/01 Mold Cost
Injection Mold Total Cost of Ownership — The Real Cost of a Cheap Mold

Two buyers order the same part from two suppliers. Buyer A pays $6,000 for the mold. Buyer …

5 min Read
Mold Payment Terms and Ownership — Structuring a Tooling Contract That Protects You
09/01 Payment Terms
Mold Payment Terms and Ownership — Structuring a Tooling Contract That Protects You

The mold is the buyer’s asset — paid for by the buyer, built for the buyer’s …

6 min Read
Mold Trial Process — T0 to Production Release
08/28 Mold Trial
Mold Trial Process — T0 to Production Release

A new mold arrives at the press for its first trial. The mold maker watches the first shot …

7 min Read
Cycle Time Optimization — How Cooling, Injection, and Part Design Affect Per-Part Cost
08/27 Cycle Time
Cycle Time Optimization — How Cooling, Injection, and Part Design Affect Per-Part Cost

A production manager looks at a press running a 28-second cycle and asks the classic …

7 min Read
Mold Steel Selection Guide — P20, H13, S136, NAK80
08/26 Mold Steel
Mold Steel Selection Guide — P20, H13, S136, NAK80

A buyer approves a mold quote, and six months later the tool is producing flash and …

8 min Read