A riser I designed to lift up a baseplate to the height of a single plate(1/3 brick). it also can be used to connect baseplates together from underneath. I included
...さらに表示 a grate pattern so you can connect it to studs underneath. the grate is similar to LEGO part 4151. the riser is the same depth as studs so you can even connect a plate in the middle of a creation.
