Know How - Tooling

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Published: 3/2/2018

Tooling: Hot Sprues—Mold a Disk or Not?
Having a hot sprue shut off against the parting line versus intentionally molding a thin disk has been the subject of controversy for many years.

Published: 1/23/2018

Tooling: Tunnel Gates for Processors, Part 2
What you need to know to overcome problems out on the production floor.

Published: 1/2/2018

Tooling: Tunnel Gates for Mold Designers, Part 1
Of all the gate types, tunnel gates are the most misunderstood. Here’s what you need to know to choose the best design for your application.

Published: 12/1/2017

How Sprue Pullers Help Prevent Molding Issues: Part 2
A vital secondary function of sprue pullers is to act as a cold well to trap solidified material left in the machine-nozzle tip.

Published: 12/1/2017

Injection Molding: New Mold Trial—Will It Run 24/7?
Use this nine-step process to make sure you’ll be making good parts after a successful trial. But even then, be prepared for some hiccups.

Published: 10/27/2017

Tooling: Know the Basics of Sprue-Puller Design
Sprue-puller designs are quite varied, and there are no firm rules to follow. But here are some important cautions and caveats to keep in mind.

Published: 9/25/2017

Tooling: Dealing with Sprue Bushings On the Production Floor
Causes of and solutions to some problems you probably deal with every day.

Published: 7/25/2017

Tooling: Critical Design Considerations for Sprue Bushings
Among them are good cooling, proper orientation, solid retention, structural integrity, generous radii, and an appropriately polished bore.

Published: 6/27/2017

Tooling: Reducing the Mass In Sprue Bushings
Important and frequently overlooked details of sprue-bushing design can improve the process and profits for an injection mold.

Published: 4/25/2017

Locating Rings, Platen Damage, and the Center of Gravity: Part 3
Selecting the right locating ring and putting it to good use takes careful consideration.