My dad has a pretty good collection of scrap and devices he's bought on sale or at the thrift shop. He is a first rate scavenger. I came to visit my parents for a two week vacation. Looking at his collection I just knew I had to Make something.
After a quick look around I decided on one of the projects he would have certainly vetoed when I was a kid. A solar furnace built from the lens of an overhead projector.
Having recently been to a Maker Faire and greatly impressed with the open source building system called Grid Beam
I decided to incorporate it into this project.