Paramatric Sponge Holder without the need of support.
In OpenSCAD the parameters can be adjusted for the size needed,
Then entering the STL file into Cura turn first 180 degrees in the Z axis and thereafter 45 degrees on the basis plate.
Or use SpongeHolderTurned file from the Meshmixer.

Flsun 3d

No

0.3

50%

Adjust the parameters in the OpenSCAD file for the size you need,
Render and export the STL file.
After the import to Cura turn it first 180 degrees and after that turn it 45 degrees to have faster print out.
Or use SpongeHolderTurned file from the Meshmixer.