Simple funnel, wall thickness 1.2mm (compatible for 0.4 nozzle or 0.2 nozzle)

No support needed (print upside down) Recommended skirt if you have good adhesion for first line to be perfect, or outside brim if you have problems with adhesion.

Ribs on the side are used for air to escape while funneling liquid. Width is compatible with cola bottles and similar. It will work on larger one but there will be a bit of space wasted.