This model has been updated to includes fins also now it allows you to adjust the handle/hole position for nesting, download the files with the v2 note to use this.
Use the Fusion360 file to change parameters to make a funnel as long or wide as you like.
To make a nested set keep adjust all parameters by the same ratio and keep the hook_len parameter static.
Included are a few various sized funnels and a nested set that you can scale to how you like.
A ring is included which fits the current nested set attached.
Where to find to change the parameters in Fusion360.
Parameters:
top_diameter
mid_diameter
nozzle_diameter
main_len
nozzle_len
wall_width - set to 0.5mm for 1 wall
hook_len
Enjoy!