A fully parametric collapsible funnel designed in FreeCAD 1.1.1.

Design Your Own Funnel:

1. Download FreeCAD
2. Download and Open 'FunnelImproved.fcstd' from the model files section
3. Adjust the six parameters in the variabel set 'Funnel Dimension'
4. Make sure FreeCAD does not throw an error (❌, this can happen with some combinations of parameters)
5. Press "CTRL + A" to select all funnel sections and export as an '.stl'-file by clicking 'file->export...' (IMPORTANT, exporting as '.3mf' will give errors in your slicer)

Parameters:

• Funnel Diameter: Defines the inner diameter of your funnel
• Outlet Diameter: Defines the inner diameter of the funnel outlet/spout
• Outlet Height: Defines the height of the outlet/spout
• Print Model Height: Defines the height of the print on the printbed (multiply by Sections to get total funnel height)
• Sections: Defines the number of sections the funnel is divided into
• Wall Thicknes: Defines the thickness of the funnel walls (Lower values (<1.5 mm) seem to be better)