Know How - Tooling

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Published: 8/1/2010

Tooling: The Science of Profile Die Balancing
In our last column, we discussed the five things profile extruders need to know about profile die design—proper land length, land-length ratio, drawdown, considerations for sensitive materials, and decompression.

Published: 7/1/2010

Confessions of a Mold Manual Junkie
OK, I admit it, I’m a manual junkie.

Published: 6/1/2010

Determining Maximum Mold Cycle Counts
The first production meeting with my new employer went something like this: “We want you to establish a preventive maintenance program that is based on cycle counts for all our molds.” Before I could launch into an explanation of how bes...

Published: 4/1/2010

When Assembling Molds, Patience is THE Virtue
Installing and fitting close-tolerance tooling requires patience, a steady hand, attention to detail, and the ability to “read” resistance.

Published: 3/1/2010

Communication Is Key in Designing Blown Film Dies
Over the years I have bought, designed, or helped design quite a number of blown film dies.

Published: 2/1/2010

You Think You Know Your Molds? Try These 10 Questions to Find Out for Sure
A mold repair technician’s job has always been to make molds run—anyhow, any way.

Published: 1/1/2010

Tooling Know-How: Five Tips on Profile Die Design
A poorly designed profile die—one that does not permit the part to be extruded with the same dimensions from run to run—coupled with a lack of understanding of the extrusion process, is a recipe for scrap generation.

Published: 12/1/2009

Tooling Know-How: Troubleshooting Defects--Part II: Hot-Runner Long Gate Vestiges
Last month, we discussed the general issues of an organized and disciplined process of troubleshooting and correcting mold defects.

Published: 11/1/2009

Troubleshooting Defects: Part I
Like the three other aspects of a typical mold clean/repair job (disassembly, cleaning, and assembly) there is usually more than one way to skin the cat of troubleshooting and correcting defects.

Published: 4/1/2009

The Eight Stages of Mold Repair
While the mold was still being disassembled, two “cleaners” began pulling tooling out of plates and putting them into buckets in preparation for a good scrubbing—and I mean a scrubbing.