Once I have found the piece I need I can get it home to start, for this blog I’ll use the Growth Charts for the process. With every piece of straight lumber I cut the ends off to give myself a nice clean cut to work with, then I can measure the length needed for each ruler. I start using my large t-square and make notches every inch, then I use my speed square to extend each line to varying lengths. Once the lines are traced I can start routering each line out, to get nice straight lines I clamp my t-square to the board. It may be a tedious process but it ensures nice straight lines!