Funnel

Probably not the most efficient use of a 3d printer.

Here is a configurable funnel for those times when you just need one.
It prints upside down so the top is against the print bed etc.

intWall = 0.6; (probably best to keep in ratio to print resolution)
intTop = 30; (radius of wide part - prints up against bed)
intBottom = 5; (radius of the spout and narrow end of cone)
intSpout = 30; (spout length)
intConeHeight = 30;

It's very basic.

Feel free to steal and change however you wish