Parameterized Funnel

This is a Fusion 360 parameterizable funnel.

I created this because I had to fill the base of a standing punching bag with sand and the fill hole had about an inch of clearance from the bag itself.  I tried the few different funnels I had and none of them worked.  Most of them the narrow hole was too small or the shape of the funnel was not smooth enough so the sand would stick to it.  With all of those funnels it took me almost an hour to put just one bag of sand in, and it took 6 bags of sand.

So I designed this funnel to be completely straight on one side and widens as it increases in height on all other sides, the most directly opposite the straight side.  This right angle design kept the sand from sticking and will allow a lot of material or liquid to enter the container below quite rapidly.  Needless to say I did the other 5 bags in less than an hour.

I parameterized this design and realized after doing so it can make all sorts of shaped funnels by changing the user parameter ‘NarrowCenterToWideCenterOffset’.  Setting it to ‘0’ makes a standard shaped funnel.  Setting it to ‘( WideOuterDiameter / 2 ) - ( NarrowOuterDiameter / 2 )’ makes a right angle funnel.

Design created in Autodesk Fusion 360 Personal