Molding Defects & Fixes

What Causes Delamination in Molded Parts?

September 1, 2026
How Weak Is a Weld Line — and How Do You Design Around It? Last updated: 2026-09-01 · Reading time:…
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What Is Jetting in Injection Molding — and How Do You Stop It?

September 1, 2026
How Do You Minimize Gate Vestige on Molded Parts? Last updated: 2026-09-01 · Reading time: about 4 min Every gate…
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What Causes Flow Marks and Blush on Molded Parts?

September 1, 2026
Why Freeze the Part Design Before the Mold Starts? Last updated: 2026-09-01 · Reading time: about 4 min On paper,…
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What Causes Burn Marks on Molded Parts?

September 1, 2026
What Files Does a Mold Maker Need? Last updated: 2026-09-01 · Reading time: about 4 min The quality of a…
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Why Do Short Shots Happen — and How Do You Fix Them?

September 1, 2026
How Do You Design Ejectors for Cosmetic Surfaces? Last updated: 2026-09-01 · Reading time: about 4 min Every molded part…
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How Weak Is a Weld Line — and How Do You Design Around It?

September 1, 2026
How Do You Design Venting for Molded Parts? Last updated: 2026-09-01 · Reading time: about 4 min When melt fills…
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How Do You Minimize Gate Vestige on Molded Parts?

September 1, 2026
Why Do Corners Need Radii in Molded Plastic Parts? Last updated: 2026-09-01 · Reading time: about 4 min A sharp…
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Weld Lines in Injection Molding: Why They Form and How to Minimize Them

September 1, 2026
Last updated: 2026-09-05 · 5 min read A weld line forms wherever two or more melt fronts meet inside the…
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Warped Parts: Why Injection Molded Parts Bend

September 1, 2026
Last updated: 2026-09-05 · 5 min read Warpage is the part fighting itself after it leaves the mold: one region…
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Flash in Injection Molding: Causes and Fixes

September 1, 2026
Last updated: 2026-09-05 · 5 min read Flash is molten plastic escaping the cavity through a gap the mold failed…
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Sink Marks in Injection Molding: Causes, Prediction and Fixes

September 1, 2026
Last updated: 2026-09-05 · 5 min read A sink mark is a shallow depression on a molded surface, and it…
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