A simple paper aeroplane became the most dangerous Instructable I've published for some time.
Step 1: Requirements & part 1 of Safety
I made this plane from an aluminium drinks can, using a heavy craft knife, scissors, a piece of scrap timber and a mallet.
There are serious risks during this Make, because the cut edges are very sharp. You may want to consider wearing gardening gloves to protect your hands, and make sure you know where your first aid kit is, because cuts from jagged metal can bleed quite profusely.