include t = 1.65; pcb_dim = [30, 65, 1.4]; margins = [ [1, 0.3], [3.6, 1.7], [bolt_l-t-pcb_dim[2], 27] ]; base_drilling = [3.5, 3.5]; dx = [23, 0]; dy = [0, 58]; drillings = [ base_drilling, base_drilling + dx, base_drilling + dy, base_drilling + dx + dy ];