Parametric Lego Technic Brick (holes on all sides). Following parameters can be used to vary the dimensions of the brick: nr_length_units = 8; nr_width_units = 2; Remark: To generate bricks with full pins at the top, set following parameter to a small value (see sample technic_brick2_8x4_full_pins.stl): r_pin2 = 0.1;