Parametric Funnel with Air-Vent for Liquids with FreeCAD

I need some Funnel to Refill some Soap dispenser, but now with Air Vent. 
It is a bit faster. And it save Money.

Bevor you begin, measure the inner bottleneck of the bottle where do you
filled in. Remove 0,3-0,4mm as Tolerance and write this in the Field Din.

Then measure the outer bottleneck from the bottle where the liquid came from.
Attention, some of the Bottles have a Border at the bottom of the Thread.
Add 0,3-0,4mm as Tolerance and write this in the Field Dout.

This is an Example with the Diameters for the red Funnel.

Thats All, FreeCAD changed the Drawing automaticly, but look for Errors
befor you exporting this to STL.

Sliced with Prusaslicer 2.9.2

Printed in PETG
Nozzle 0.4 mm
Layer  0.2 mm

The Pictures in the Gallery:
Left (Red): Older Bottles from Aldi North Germany (The Example)
Middle (Orange): Washlotion from Aldi North Germany (22mm)
Right (Blue): Schauma-Shampoo from Schwarzkopf (23mm)

Hints: When you refill an empty 500ml Bottle with 500ml, 
the empty Bottle must be really(!) empty.
You could open the (full) Bottles by turn the Cap.
Some month ago i found a 600ml Bottle by Aldi North Germany, but this 
was Actionware. Not all the Time in the Normal-Sortiment.

I am using it for my 500ml Refills (without Labels).

Schwarzkopf (Shampoo) and Aldi are not really happy about this advertising.