These models are intended for single wall mode, but can be printed normally with two walls or more with normal fill.  

If you scale and use single wall mode, process (slice) the file and use the slider to determine at what layer the scroll fins start.  Then enter that number minus 1 in the Bottom Layers setting, for instance, 19 bottom layers.  !If you do not do this for single wall mode, the fins will not be supported!  (if using the included .gcode or .3mf files this should not be necessary unless you  change the scale)

I used GIANTARM Silk Metallic Silver PLA an .16 or .20mm layers.  Use 60deg for bed!  Also used eSun blue-green silk.  I recommend both.

The finished print will not hold water, but the print could be placed in a low container that will hold water.  Or use dried flowers.  Add pebble ballast for additional weight if desired.