A siphon of a sprouting container was lost so I modeled a replacement. The red one in the photo is an original.

All walls are 1 mm thick but due to the slope of the outer cone the thickness a slicer sees is larger. I recommend extrusion width of 0.6 mm even with a 0.4 mm nozzle.

If you want to change the dimensions, the FreeCAD source is there.