Molds & Tooling

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Published: 10/31/2018

Why Ejector Pins Break and How to Prevent It: Part 4
In this installment the focus is on bearing length, clearances, keying, and machining.

Published: 10/1/2018

Tooling: Why Ejector Pins Break and How to Prevent It, Part 3
Here we focus on forces, friction, surface finish, and lubrication.

Published: 8/28/2018

Tooling: Why Ejector Pins Break And How to Prevent It, Part 2
Here’s the when and how to reduce the unsupported length of pins.

Published: 8/1/2018

Tooling: Why Ejector Pins Break...and How to Prevent It, Part 1
In part one of this four-part series, we focus on the molding machine and the ejection system as culprits.

Published: 6/2/2018

Tooling: Clamp Pressure & Cavity Land Area, Part 2
What you need to know to prevent flashing and mold damage.

Published: 3/29/2018

Tooling: What You Need to Know About Jump Gates
Many molders don’t care for jump gates because they have to process around them. But here are some tricks of the trade.

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.