HOW TO bend acrylic
The first thing you need to bend acrylic is an acrylic bender. You can buy one for 200 dollars or you can build one. I suggest building one since it is a lot cheaper. I built mine using a heating element strapped to a board. All of which I purchased at a local supplier. The element sits between two boards that are attached to a main board with a gap between. The element sits about 1/4″ down from the top surface of these boards. This way you can heat the plastic without melting it to the element. I covered the boards in tin foil to help protect them from the heat and also to reflect the heat more toward the acrylic… Thanks jher! [via] Link.
RC model helicopter prices have reached a point where all sorts of challenging (i.e. crash-prone) robotics projects become affordable. This document explains how to build a 300 g, 3D-capable helicopter with embedded Linux and Bluetooth datalink for less than 500 EUR. As a proof of concept, we provide software which allows the helicopter to be remotely controlled over Bluetooth with a PC joystick. Future work will focus on the integration of sensors (IMU, altitude, magnetic compas, GPS, camera) and flight control software (either third-party or dedicated). [
Another great 
“Digiscoping”, based on methods of marrying your digital camera to a conventional optical device, is an off-the-shelf solution for TreeHugger closeups of birds, concerts, and sporting events. The better way is to adapt a decent digital camera, which you may already have and spent a lot of time learning to link to your computer, to fit with a decent spotting scope. 
Digital microscopy systems can cost thousands of dollars but a very useful model can be assembled by using one decent compound microscope and consumer products that cost less than $150. Many hopitals and universities have retired micorscopes that can be adapted to this task. The plans found here show how to modify a commonly found microscope. Thanks Dan! 
Great how to…I still enjoy the aesthetic of black and white a great deal, and of course have tried to get the “look” I like in digital as well. Thanks to a lot of experimentation, some reading up, and tips from people who are a lot better at it than I am, I’m finally starting to see the kinds of results I wanted. In particular, thanks to Jim Fuglestad, aka Shutter at DPReview, who thought up the “dodge and soft light” technique described in this essay. 
