premise: How to make a chainsaw flash light or a gas powdered spotlight.
hypothesis: Grab your materials which include a chainsaw, treadmill motor, 12 volt car headlight, tubing, bike sprocket and chain, scrap wood and screws and tools, remove sprocket from a a bicycle and line up best fit, wield the sprockets, design and configure the machine, add some wood framing, add the chainsaw to the sprockets and making the final adjustments, mount a light and regulator,