Correct Short Shot Size

The purpose of a short shot during 1st Stage Injection is to ensure that all cavities remain short at transfer during normal process variation. Question: I was told to short the mold around 98% based on final part weight, is that enough? My Response: Basing any short shot on the final part weight is an […]

Troubleshooting Sister Tools

When troubleshooting a problem which is unique to a particular tool, but not present in a sister tool, then the solution lies in locating the differences. Issue: Company is encountering an unexpected reduction in part dimensions after conditioning where a growth in dimensions has been seen in all similar parts. The parts which are similar […]

5S Training in the News

Maintenance and Repair Organization (MRO) is an important aspect to efficient and timely equipment maintenance. Issue: In most Lean manufacturing efforts, maintenance and management tend to be the two slowest departments to adopt practices such as 5S. This may be because they are perceived as an indirect or supportive component of Manufacturing, but this is […]

How Much Back Pressure is Too Much?

The screw does most of the melting, but the barrel temperature should be maintaining the melt temperature. Question: How do I know if there is too much back pressure? My Response: The quick method is to make a significant drop in the back pressure, such as reduce by half (ie. 1000 psi to 500 psi) […]