Rectangular Coffee Bean Funnel

I got fed up sweeping stray coffee beans off the floor after re-filling my counter-top coffee tin from a 1-kilo bag, so I designed this simple rectangular funnel to make sure all the beans go into the tin!
It's designed for a tin roughly 90mm x 60mm but I've uploaded the SCAD file so you can modify it with OpenSCAD for whatever size you might need.
No special print requirements, just use whatever works for your favourite feedstock. Doesn't usually need supports either.