Some times ago I modeled many (22 completed, and over 30 uncompleted models) aircrafts in Google ScetchUp. When people seen my models, they have a questions. For answer I write "lesson".
At first, I wrote on my native, russian language, year ago - at july of 2010. You can see this two pages on my old own website (at russian)
Now I try translate it into english (also sorry for my bad english... I write at english and use Google Translator for check it, but some er