HOW TO – Make a homebuilt anemometer
Raph writes “The Homebuilt anemometer project – I wanted to build a measuring instrument which must be placed outside, exposed to the natural elements so I decided to build a cup anemometer. To add a little more challenge to this project and make it less expensive, I decided to try to build the anemometer using parts I already have, as possible.” Link.
Rick writes “A great ‘how to’ making steam engines, (although most are run on compressed air). All you need to know from simple single cylinder models to V twins and more. A neat project in time for the holiday season – What a great present.”
Rick writes “Animated examples of many different types of internal combustion and heat engine along with an explanation of how they work. My favorite is the
Rick writes “Here are some examples of Stirling engines – An online shop for many model engines. But often existing products are the inspiration for our own production efforts. Worth a look for anyone interested in Stirling or steam engines.”

“…construction of a very simple low-cost compound microscope. As shown in Figure 1, the microscope we describe is one that just about anyone can build and will produce a magnification of about 75 times. Microscopes may be thought of as very intricate and mysterious instruments but in reality, they are not as complicated as one may think. Building this simple instrument is not only a fun project, it will help you understand how microscopes work.” Thanks Rick!