Fish Tank Square Funnel

A simple square funnel to be used with a fish tank square hole where you feed the fish from. I made this for my neighbor to help make the auto feeder get more dry flakes into the water. It keeps it more tidy as well. The attached model has a hole cut out on one side where the auto feeder sits. Attached is an OpenSCAD file if you'd like to customize to any square hole you need a funnel for!