Step 6: Mark and position the 2"x2" spindles

First, determine the location of the 2"x2" spindles then find the center point of the 2"x6" vertical board. From this point, mark a line every 5-inches along the 2"x6" board.

Next, measure the distance from the mark that is closest to the 4"x4" post (should be equal on both sides).

If the measurement is greater than 2 1/2 inches, use the current marks.

If the measurement is less than 2 1/2 inches, offset ALL of the current marks by 2 1/2 inches. (Make sure to differentiate the two different marks.)

To secure your spindles, hold the 2"x2" spindle centered over the mark you drew in the previous step. Position the top of the 2"x2" spindle tight to the bottom of the 2"x4" horizontal hand rail board. Secure the 2"x2" spindle to the 2"x6" vertical board using only one deck screw.