GTU is an online machining and educational resource

GTU is an online machining educational resource

Welcome to Greene Tool U—an online learning series offering a wide variety of Online Machining Instruction and Tutorials by Greene Tool Systems, Inc., of Dayton, Ohio.

Access any of the lessons below or click here for an index of our  machining instruction and tutorials library, and begin learning the fundamentals of machine tooling. These pages were written by Tom Greene, and illustrations and content has been provided by OSG.

Bookmark this page, and check back often as we’ll continue adding lessons. If, at any time during the lessons, you need technical help, email 

Now, drill down, and start learning!

Machining Instruction and Tutorials Online Lessons

Basic Drilling Technology

Machining Instruction and Video Tutorials

Speeds and Feeds

Increasing Speeds and Feeds

Have a basic machine tool question?

Click here to contact us and we’ll do our best to help!