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Browse our mold making articles and technical guides.

Burn Marks in Injection Molding: Diesel Effect, Venting, and Gas Traps

Burn marks in injection molding come from compressed gas, not excess heat. This guide covers the diesel effect, gas trap diagnosis, vent dep...

April 13, 20269 min read

Flow Lines and Jetting in Injection Molding: Causes and Fixes

Flow lines in injection molding cause 20 to 35 percent of cosmetic first-article failures, but most cases resolve without tooling changes. T...

April 13, 202610 min read

Weld Lines in Injection Molding: Causes, Strength, and Fixes

Weld lines in injection molding reduce tensile strength by 10% to 50% depending on resin and gate position. This guide covers how to move we...

April 13, 20269 min read

Vietnam vs China Injection Molding: The China+1 Strategy

Section 301 tariffs make Vietnam a serious alternative for US OEMs sourcing injection molded parts from China. But Vietnam tooling cost and ...

April 9, 20269 min read

Short Shot Injection Molding: Systematic Troubleshooting Guide

Short shot injection molding failures cause roughly 15% of first-article rejections on offshore tool launches. This guide walks you through ...

April 9, 20268 min read

Warpage in Injection Molding: Why Parts Warp and How to Fix It

Warpage injection molding defects cost programs thousands in rework and scrap. This guide covers the four root causes, including differentia...

April 9, 20269 min read

Sink Marks in Injection Molding: Causes, Prevention, and Fixes

Sink marks in injection molding are predictable and preventable. This guide covers the design ratios, process settings, and tool corrections...

April 9, 20269 min read

How to Manage an Offshore Mold Project: Timeline, Milestones, and Communication

Managing an offshore mold project without losing control of schedule or quality requires a formal milestone gate at every phase from kickoff...

April 9, 202610 min read

Hybrid Tooling Strategy: Split Molds Offshore, Run Production Onshore

A hybrid tooling strategy cuts injection mold costs 40 to 60 percent by sourcing steel in China and running all production at a domestic pre...

April 9, 20269 min read