Woodworker's Journal summer-2009, страница 17
Header Questions, AnsweredWoodworker's Journal readers regularly submit questions related to the ins and outs of woodworking —and, in conversation with those readers, WJ finds someone to answer them. QThey say you should use a table-mounted router when using the large router bits, and you should lower the rpm. I have this setup and also purchased a speed controller, but how do you set the rpms? Lonnie Waltrip Elko, Nevada A Good question. The short answer is: you don't set the router to a specific rpm. Run the router as slow as you can and still achieve a clean cut with a reasonable rate of feed. This could be 10,000 rpm for a soft hardwood, and 14,000 rpm for harder woods. The only way to do this is by trial and error. Start with the router (or speed controller) set to run slower than you think you need, and make a trial cut. If the quality of the cut is poor, or you have to feed the workpiece exceptionally slowly to keep the router from bogging down, increase the rpm slightly and repeat until both the cut quality and feed rate are acceptable. It's not rocket science, but until someone comes up with a digital rpm readout for routers, it's the best you can do. Steve Krohmer QI often use recycled and found wood in my projects. My problem is identifying the woods. Is there a resource on the web or in print that makes identification easier? Stephen Kleinatland Dover, Tennessee has not only the photos and descriptions but, as the name implies, further directions for the scientific identification of woods. You'll need a hand lens or an elementary microscope. The U.S. Forest Products Laboratory uses similar tech- A Among the books which have photos and descriptions of various woods' characteristics you can use for comparison purposes are The Real Wood Bible by Nick Gibbs and World Woods in Color by William A. Lincoln. An additional book, Identifying Wood: Accurate Results with Simple Tools by Bruce Hoadley, These books will help you identify unknown woods. WORLD WOODS IrT* ' COLOR 20 reader questions, answered |
