Teak is an excellent choice, the “crème de la crème”, for fine outdoor furniture. Teak is highly weather-resistant by nature, which means that it does not have to be weatherproofed when used outdoors – although it often is finished and stained for aesthetic purposes. Teak is one of the most expensive exotic hardwoods there are, but it will look absolutely beautiful and maintain its integrity over time.
This style of saw will provide more power than a contractor-type saw and have the high-quality rip fence you need to do good work. However, because they are favored by professionals and serious amateurs, cabinet saws are harder to find on the used market. Scour the classifieds and online sales (be sure to check industrial auction sites as well), and do some networking. Check the bulletin board at your hardwood supplier and ask the proprietors if they know of anyone selling a saw. Also call local cabinet shops. They sometimes have a surplus tool sitting idle that they’d be willing to sell. Take your time in this step. A careful investment will pay dividends in the long run, but a well-intentioned compromise can cause long-term frustration.
In addition to the type of finish you want, the location of the final installation should be considered when choosing a hardwood species. While it won't have as much bearing on furniture pieces to be used indoors, you may want to consider some more moisture-resistant species (such as cypress or the ever-increasingly endangered teak) for outdoor projects. Again, your local woodworking supplier will be able to help with this decision if you are unsure about what species might work well for your particular application and climate.