Thanks to everyone who has bought a Cardboard Engineering Source Book, I've been delighted with the amount of interest I've had. Thanks you! I'm planning on doing more eBooks soon. The next one will be a book on levers and linkages with perhaps four or five working models and an explaination on how you can use these mechanisms in your models. I also have vague plans to do another along the lines of the section I did on model development but with a little more detail. Has anyone got anything else they'd like to see?
Don't worry though, dear subscriber, my next project is going to be another exclusive subscriber model.