Step 5: String Grid

Picture of String Grid
We added screws to the top of the structure at 3" on center (about the diameter of a 20 ounce soda bottle) along the entire length of the wood.  Using 17 lb. masons line, we wove a grid around the screws weaving the string above and below the crossing grid.  A longboard worked well to roll underneath the frame to weave the string.