This is remix of IXPatch's soft serve screw top storage container.
The hole in the bottom is 3.9 mm in diameter.
I recommend printing the soft-serve with supports around the outside. You can paint out support from the inside.
The default model is 1:1 with an actual ice cream cone, so I recommend that you download the ¼ scale versions for cabinet knobs, where the hole is maintained at 3.9 mm. You'll have to glue on the soft serve though.
The author remixed this model.
