For what its worth I make mine out of oak that I by in the lumber yard. Lowes stock it in 2, 3 and 4 ft lengths it is smooth and all you need to do is cut your hole for the bit just make sure that you get pieces that are streight. I use a 1x3 and a 1x2 I screw and glue the 1x2 to the 1x3 after I cut my holes using a drill press and hole saw and then I attach a 2 inch piece of pvc to the fence to except my shop vac hose keeps the table clean except when cutting datos. I finish mine with a coat of poly and they look great. I made 2 for my table one to fit across table and one for the length in case I am working on some long pieces. The upright piece also gives you a little more support on tall pieces. Any way we all have things that work best for us it may not be right for you just a thought about an alternet way of doing things.