I made the support boards so they were under each place where the ends of the top boards came together. Since I was using this pattern the support boards did not meet at a 45 degree angle. You can cut these types angles and pieces by laying one board on top of the other and marking it for the cut. You don’t need to try and draw the angles with a protractor, just align everything and mark them and make the cut. These joints were the only places that I used my circular saw.
For the next section I reversed the pattern I was using which created an even more interesting look. Keep in mind that since there were no standard sized lumbar pieces I had to measure and cut each board to fit its specific place.
