Burn Marks in Injection Molding: Causes & Fixes

Burn marks mean trapped air or hot plastic. Learn how the burn location tells you the cause, and the fixes that work — venting first, steel last.
Weld Lines in Injection Molding: Causes & Fixes

Weld lines show up where two flows of plastic meet. Here’s why they form, how much strength they cost, and the fixes that actually work.
Short Shots in Injection Molding: Causes & Fixes

Short shots leave parts unfinished. Here are the 7 most common causes, how to tell which one you have, and the fixes that actually work.
Injection Molding Flash: Causes, Prevention, and How to Fix It

Flash is a force-balance problem. The 7 root causes, vent-depth and clamp-tonnage charts by resin, a 7-step fix sequence, and DFM prevention tips.