this is a funnel made in prusa slicer and saved as a 3mf file to make it customisable, it's very smoothly rounded and easy to edit.

it is made of 2 parts, a cone and a cylinder, which can be edited in prusa slicer. i set the diameter of the cone to 66mm and the cylinder to 24mm which fits a water bottle perfectly.

it can be opened in cura slicer to benefit of the arc welder's smaller file size, but i could'nt edit the dimensions as in the prusa slicer, nor could i upload the Gcode file of the arc welder add-on