Our Mission in Videos
Don't fear the gear, learn here...

When you want to design and make a better set of gears for your transmission this is where you go.

Pitch Diameter for the pinion and gear have tangent geometry.  

A key parameter that must match for two gears in mesh.

A simple way to figure it out.

After all of your hard work making the gears, you want to get this right. Are you going to set the center distance by calculation? Here's how.

No matter how you manufacture the gear, here is a sure fire way to inspect. Simple shop tools and our calculator and you will add some certainty to your project.

Want to program an older machine in your shop. Lathe, hobber, anything. Here are some examples.

A great way to economically produce that one special gear? Here is the tool and tech to get it done - old school. If you have a Bridgeport mill, a dividing head and a single row cutter, you can make a gear.

Design dimensions of your gear blank to get the gear ratio. Check the Patreon link to get the equations.

An example setup of a hobbing machine with a differential mechanism.

A simple example showing blanking and hobbing.

The cutting tool to manufacture involute gears is called the hob. Here is the detail about the hob and the setup.