Yes, that is what I am showing you in the link I provided.
The only thing that is missing is the outlining rectangle which you could add. The spacing of your grid is controlled in the ‘Array’ dialog settings at the time you generate the grid pattern.
tl;dr: draw two lines, use array to build the spaced grid, draw rectangle if desired, set layer to ‘Line’ with appropriate speed and power for your system, burn, enjoy new grided waste-board.
Is this not what you are trying to do? 