It's a funnel. Dimensions 155,155,128 mm. Made in Blender. It's for pouring stuff from big mouthed containers, to small mouthed containers. funnel.scad is a program I wrote to generate funnels of the specified size and shape. I used the generator to make a funnel to feed my fish. :)

To generate the fish food funnel with OpenSCAD run: funnel(1.8, 72, 53, 14, 32, 11, 100);

To generate the salt funnel run: funnel(1.8, 40, 20, 35, 15, 10, 80);

Note that I imported, then exported it from Blender because OpenSCAD exports to text STLs, which are three times larger than binary STLs.

I printed all these funnels with no support.