Print 37 of these bases. For having a good overview I recomand to print always the same color for the same ressources. For example, print all the ore bases in grey, the wheet bases in yellow and so on. For an easier overview I recomand as well to print the harbor ressources (https://www.myminifactory.com/object/3d-print-44818) with the same colors as their corresponding bases. After the magnets have been added, the bases are glued together with their correspoinding landscapes.