STEM Career Outlook

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

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Injection Molding Design Guide

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

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

more free publications

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
STEM Career Outlook

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

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Injection Molding Design Guide

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

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

more publications