Parametric Funnel for Fluids (FreeCAD)

I needed some funnel to change some fluids from one bottle to another
bottle. Or the Rest of fluids from the old into a new bottle or 
simular.

But the most bottleneck have a different diameter.
So I made a parametric funnel in FreeCAD.

You can change the diameter in the Spreadsheet:

*_in means:  Put it in the bottleneck (lower bottle)
*_out means: Put the bottleneck into the Funnel (upper bottle)
t_wall is simply the thickness of the wall

Put the bottles in a corner and the gravity do the work.

Hint: Use different Colors for more then one funnel.
I'm using:
PETG Black and Orange
0,4 mm Nozzle
0,2 mm Layer

Attention: The 3mf-File was made for Prusa MK4.

On satin- and structure- metal sheets disolve the funnels (Here 2 times).
The stl- and 3mf-Files are samples.

A note to the Fotos from "Hygiene Spray":
After cleaning the empty bottle I'm using it for moisting plants.
Or cleaning the headbed of my 3D-Printer.

Sorry for my bad english