How to prevent and trounleshoot short shots

摘要

Short shots are among the most common and visually obvious quality issues most molders face. So what causes them? How can we prevent them? And how do we trou-bleshoot them if they do occur? A short shot is when a plastic injection molded part doesn't completely fill out - a portion of it is missing. A few issues can cause short shots, and the fix isn't always straightforward. Causes include poor venting, material variations, improper machine settings, blocked gates, and mechanical failures. So with numerous causes to the issue, it's often hard to pin down which one you're battling. Unfortunately (or fortunately), there are just as many fixes to these issues, depending on the root cause of the problem. But the best-case scenario, of course, is to avoid them altogether.