Category: Mechanical Design

There are many times in my design career that I needed to translate an object without rotating.  Lifting an object on a table is a great example of this.  At an airport we may see a baggage loader...

Several times in my career, I have come across this very unique stress pattern when dealing with holes that are subject to shear stress. Let's unpack this and see what causes it and how to fix...

Years ago, I designed and built a simple cart for my lawnmower. It has proved reliable over the years. In this video, I give the secrets to my design. https://youtu.be/wG7hjfxvTf8

https://youtu.be/EYMQro06wTw This video show that movement of a chain tensioning device used on a roller coaster chain lift. There is something abnormal about the loading and unloading motion...

https://youtu.be/ROlFG6dlLoQ Suggested Video https://youtu.be/Z7z4qVQgvzY

Yes, planetary gears can even be found in pencil sharpeners. This is an unusual situation because there is no sun gear in the system. Also, the carriage is input and the planets themselves are the...