Helical Gears in a gearbox
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Evolvent Design

Putting your project in motion

If you want it, work for it!

ISO9001:2015 Certified

We work with you to develop your early-stage prototypes and design for integration into your machine, instrument or gearbox.

Medium and Fine Pitch Gears made to your plan tolerances. Spur, Worm, Ratchet, Sprocket, Helical and other non-involute forms.

We've shared our in-house tools for making gears in 2D & 3D, and inspecting finished gears with standard tools

Our quarterly course covers everything you need to get started making gears and using them in your projects. Gear Hobbing, Shaping, Milling and more ...

Gear Manufacturing & Inspection

Hobbing & Generating

We use the hobbing process for commercial quality gears found in machine tools and power transmission, up to higher quality gears for advanced applications. The upper range of spur gear sizes is up to 10" and up to a medium pitch of 12DP.  

We hob smaller "instrument" sized gears and pitches to 200DP, found in the aerospace and dental industry.

Large tooth count gears over 300, to pinion gears with only 6 teeth.  

Spur, Worm, Ratchet, Sprocket, Helical and Non-Involute Forms

Our bevel gears are made with the generating process and can range up to 4.5" pitch diameter at 16DP


Plans can be specified in many ways from the practical Measurement over Pins (MOP) & Measurement over Wires(MOW) methods, all the way up to the most modern AGMA Standard.

We can measure using tolerances from current and historical AGMA Standards.

AGMA Quality tolerances can be measured in our Microgear system and deliver reports. We use NIST calibrated measuring instruments on our shop floor and throughout our inspection process. 


Hobbing a gear on a Pfauter gear hobber, with coolant oil
A newly designed spur gear with our setup sheet.  Hard to see but the Profile Shift will make this gear

Design With Us

Gears & Mechanisms for Automation

No matter the stage of your project (from napkin sketch to first articles), we bring technical skills and a knack for fast-paced prototyping to reach better solutions, quicker.

We can make the gears we design. It is unusual to have gear manufacturing and gear design in the same shop. A great combination to get your product, transmission, prototype into motion quickly.

Want to have a specific gear ratio, center distance, face width, or strength? Ever hear of the minimum volume gear, power density etc.?  

Electrical Systems

Electrical systems are better, faster and smarter than ever. Linking motors to mechncical systems in ways that reduce power consumption and are fit for purpose continues. Some components & skills that are key for electro-mechanical integration: Encoders(angular and rotary speed), Relays, and counters.


A well oiled machine will last for a long time. Check out our lubrication resources to aid in your search for oils and on the key infomration and calculations to make sure you are using the correct oil in your new gearbox. Find it online, and make the purchase. Keep your existing machinery up to date.

Calculate and Manufacture in Your Shop


We've shared our in-house tools to help you design, inspect, and make your own gears. From our gear calculators to 3D gear generators these tools will make gear production easier and more understandable. Change Gear Calculator and other indexing machine setup tools and services.

Short Courses

Gears for Makers, a comprehensive one-day course to cover the history, math, and techniques to get you making gears in your own shop. The course is located in our Ventura California shop where we will split our time between design, calculating and measuring, and half our time to machining hobbing or shaping gears.

2023 Schedule
March 11 - Gears for Makers
June 23 – Short Course @ BASH
August 5 – Worms and Wormgears
October 14 – CNC Milling Gears
Settin up to Mill a  gear