Ron Hazelton [http://www.ronhazleton.com] shows how to rip cut a very long piece of wood using a circular saw instead of a table saw. First, place sawhorses approximately every 4 feet under the wood. Choose the correct blade for the wood. Affix the circular saw with an edge guide. Set the blade depth so that the blade barely goes past the wood. Put scrap pieces of lumber on the sawhorses under the wood. Then the long rip cut can be a zip.