Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

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Materials

Design

Processes

Units

Formulas

Math
Pattern, Finish Allowance, and Wall Thickness
Metal Pattern Oversize Factor (each direction) Finish Allowance
(smaller number for larger sizes)		 Min Wall
mm
(inches)
Aluminum 1.08 - 1.12 0.5 to 1.0 % 4.75 (0.187)
Copper alloys 1.05 - 1.06 0.5 to 1.0 % 2.3 (0.094)
Gray Cast Iron 1.10 0.4 to 1.6 % 3.0 (0.125)
Nickel alloys 1.05 0.5 to 1.0 % N/A
Steel 1.05 - 1.10 0.5 to 2 % 5 (0.20)
Magnesium alloys 1.07 - 1.10 0.5 to 1.0 % 4.0 (0.157)
Malleable Irons 1.06 - 1.19 0.6 to 1.6 % 3.0 (0.125)
Glossary
FREE Publications
Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

more publications