Electrode: By default is 50mm to fit my small printer, but you can scale to 60mm to fit the 1/20 scale. He is selfstanding and doesn't need base to balance in place.Voltorb: Already at 1/20 scale at 25mm. Needs a base (included). To guarantee the best results use a resin 3D printer, some polygon intersections and smaller bits may give slicing artifacts in Cura. Do not share or resell the STL file.