i've got this little 3d rendering in sketchup.there's a flat circular surface with concentric rings.the rings that are lower i want to have filled in with a kind of glue or something, so that it will bubble up and harden like that and be raised higher than the rest of the surfaceso i basically want raised concentric rings that are curved instead of straightit should look like liquid with high surface tension keeping it from spilling overhow can i do that? is it even possible in sketchup? thank you for any help you may be able to give