Step 3: Splay Block
2. Drill (3) 3/8" diameter through holes on a 30 degree angle from vertical. The holes should be spaced 120 degrees apart Start the center of the hole about 1/2 inch from the outside edge of the block.
3. Flip the block over and repeat drilling another 3 holes. These holes should be offset to be between the holes drilled from the top side.
The photos in step 8 show the intent of the angle scheme.