Simple D&D 3x3 grid tile impression terrain tool for xps foam and alike

thingiverse

Cut out a 3x3 inch square tile and press it firmly onto the tool, allowing it to leave precise guide lines that you can follow later to make your cuts. This method saves time, but ensure you have a perfectly square cut by carefully aligning the corners beforehand. To get an accurate alignment, place the tile flat on top of the tool so you can visually inspect the corners before applying pressure to imprint the lines. This technique is specifically designed for cutting XPS foam or similar materials that are malleable and responsive to pressure.