Step 2: Bottom and top rail preparation
Required tools: circular saw, and carbide or diamond saw blade.
Use carbide saw blade or diamond disc. Cut rails 3/8" shorter than measured distance between newel posts.
See figure 2

Step 3: Drilling of holes in rails
Required tools: drill, 1 1/8" dia with 1/4 dia pilot hole saw, pencil.
-6" (sphere) spacing: (see figure 3)
Mark the first hole on each side, 4" to 6" from each end, divide the remaining space between the 2 end holes equally.
The center distances must be between 6.5" and 8.5" for each baluster. (baluster #0210, 0210-1, 0214, 0209, and 0219)
Space between baluster centers may not exceed 7.5" for baluster # 0225.
-4" (sphere) spacing:
Mark the first hole on each side, 4" to 6" from each end, divide the remaining space between the 2 end holes equally.
The center distances may not exceed 6.5"
Tip: During hole drilling rotate drill few degrees to ease cut out removal from tool.