Molds and tooling for plastics production are used in all processes to give the melted plastic its final shape. Includes molds, mold components, ejector pins, mold bases, nozzles, mold cores, mold cavities, mold texturing, laser marking.
How to Achieve Simulation Success, Part 1: Model Accuracy and Mesh Decisions
Molding simulation software is a powerful tool, but what you get out of it depends very much on your initial inputs. Follow these tips to create the most successful simulation possible.
Molds & Tooling: Essential Reading
The Impact of Hydraulics on Tool Design, Practical Uses -- Part 2 of 2
Here are more tips on using hydraulically actuated devices on your tools.
The Impact of Hydraulics on Tool Design -- Part 1 of 2
Get a better understanding of their use, proper sizing, and how the tool design and setup in the machine can impact failures in manufacturing.
How to Select the Right Tool Steel for Mold Cavities
With cavity steel or alloy selection there are many variables that can dictate the best option.
How to Optimize Pack & Hold Times for Hot-Runner & Valve-Gated Molds
Applying a scientific method to what is typically a trial-and-error process. Part 2 of 2.
Hot Runners: A View from the Bottom Up
Addressing hot-runner benefits, improvements, and everyday issues from the perspective of decades of experience with probably every brand on the market. Part 1 of 2.
FAQ: Molds & Tooling
Leader pins are often referred to as guide pins. They lead or guide one-half of a mold into the other. The outer diameter of a leader pin is typically 0.0010 in. below nominal with a tolerance of +0.0000/-0.0005 in. A leader-pin bushing typically has an inside diameter of 0.0005 in. above nominal with a tolerance of +0.0005/-0.0000. Therefore, the pin has a close sliding fit in its mating bushing with a clearance of between 0.0015 and 0.0025 in. total. A close sliding fit is intended for the accurate location of parts that must assemble without perceptible play.
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