Before creating the grid go into its dialog and change rows/col from 10 to 1. Then create the grid. Scale using radial Y to as big as you need it and fine adjust its thickness along the Y axis by scaling if need be. Rotate grid 60 degrees. Duplicate along the Y axis and move the copy down along the Y axis. Rotate the copy 60 degrees and move so that the ends butt together then combine and duplicate and do the same procedure for as long as you need the panel.