Not exactly sure of your question, Do you mean grain?, since I was making multiple chairs on some I deliberately picked wood that matched in color and courseness of grain, for other joints I picked wood with mismatched colors and grain just to be different. If you mean length, After i cut the bottom rail, I dry fitted them, and measured the length of the top rail at the height I wanted the stile to end and then I experimented with the seat stile cutting it a little shorter so it would slide up until I thought it looked like a good height for a little kid to sit at the table. Our grandaughter visited this weekend and the height was perfect. If you mean getting the angles right, I did that using a little adjustable angle tool that I can lock into place and then transfered that angle to the rails and stiles. I hope I anwsered your question.