Gear generator tool allows you to design full gear trains and see them in action!

This new online Gear Generator tool can be used to simulate sets of spur gears. You can plug in all kinds of a parameters, and then animate the gears at various speed to demonstrate working mechanism. You can also download the final results in SVG format. The tool allows you compose full gear layouts with connected gears to design multiple gears system with control of the input/output ratio and rotation speed. The gears are of the involute type which is what most of the world wants -- except perhaps for the clockmakers. This tool is fantastically useful and very well designed too!

Here is where you can check out and use the free online Gear Generator tool.

To learn more about gear design, check out these great reference books such as Dudley's Handbook of Practical Gear Design and Manufacture, which provides comprehensive information on the design and manufacture of gears for the expert and novice alike. Topics include: Gear Types and Nomenclature, Gear Tooth Design, Gear Reactions and Mountings, Gear Vibration, and The Evolution of the Gear Art.

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So, how do sewing machines work anyway? Here's your answer!

Have you ever wondered how a sewing machine works? I know I have. I mean...how on earth does the machine bring a thread through one side of the fabric and out the other, locking it in the process? And how does it do it so fast? When was the sewing machine invented and was it by some guy named "Singer"?

This great mystery will be solved once you watch this video, an episode from the classic TV program, The Secret Life of Machines, hosted by Tim Hunkin. Hunkin is a cartoonist, engineer and -- best of all -- automaton-maker. He's made dozens of large, interactive, mechanical sculptures, simulators, and rides to amaze and amuse. His deep understanding of machines, ability to create cartoons, and playful approach make him one of the best teachers around. In the video, Hunkin uses a 6 foot long sewing needle and four people to slowly sew two large sheets of foam together in the same manner as a sewing machine. You also will learn some interesting history (via cartoons) along the way.

Here's a snippet of a drawing by Tim Hunkin related to sewing machines from his book titled The Rudiments of Wisdom: An A-Z of Random, Peculiar and Fascinating Facts...

You can see the complete drawing here.

Here is where you can see more of The Secret Life of Machines with Tim Hunkin.

[ Thanks Ron! ]

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