This vase in modeled by me in Autodesk Maya and redefined mesh is on Autodesk Fusion 360. You can fill vase with watter ( depends how quality of your printer settings ) I sealed mine by epoxy resin (poured in 50ml, leave set to honey consistence, slowly by turning vase spread resin everywhere inside vase and slowly pour out). With watter you added weight and keep more stable when you put flowers inside.