Yellow Part

Design for Moldability Toolkit

Get in-depth design advice to optimize your plastic parts for injection molding. Designing with moldability in mind can accelerate production time and reduce production costs

Optimizing Part Design for Molding

There are many design elements involved when creating plastic parts for injection molding—design for cost, design for quality, design for assembly, design for manufacturability. And navigating that landscape can be challenging at times. At Protolabs, we provide automated design analysis on CAD models that highlights features in your part design that can be adjusted for moldability. It’s a great design resource to have at your fingertips. To keep those moldability advisories at a minimum and optimize your part design, we created this helpful kit of different injection molding resources.

Designing Complex Features for Molded Parts

Undercuts
Bump-offs
Side-actions
Shut-offs
Core and Cavity
Wall Thickness

Navigating Critical Molding Advisories

Insufficient Draft
Gate and Ejector Pin Layout
Radii Added
Non-metal Safe Changes


Design software

A Beginner's Guide to Injection Molding

Whether you’re new to the injection-molding process or a veteran of manufacturing, Designing for Moldability is a quick reference guide to wall thicknesses, surface finishes, tolerances, materials, and other thermoplastic molding insights. It’s a thorough look at injection molding that might just provide a few tips to help you make better parts.

Read Guide

Designing Complex Features for Molded Parts


Undercuts

Achieving Undercut Success in Molded Parts

Read Tip

Bump-offs

Green blue part illustration

Creating Complex Undercuts with Bump-offs

Read Tip

Side-actions

Eliminating Side Actions with Draft

Read Tip

Shut-offs

Incorporating Shut-offs in Molding Design

Read Tip

Core and Cavity

Choosing Core and Cavity Placement

Read Tip

Wall Thickness

Guidelines for Thick and Thin Areas

See Guidelines

Navigating Critical Molding Advisories


Insufficient Draft

See Guidelines

Gate and Ejector Pin Layout

See Guidelines

Radii Added

See Guidelines

Non-metal Safe Changes

See Guidelines

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Tour Our Injection Molding Facility

Want a peek behind the curtain of our injection molding process? Take a virtual tour. We offer a fully digitized injection molding process to bring you cost-efficient parts fast. From design upload to quoting, from part production to shipping, it’s injection molding tailored to fit your needs, every step of the way.