This is not intended to be a long term solution, the print will quickly degrade in the elements. However - if you need a quick fix to hold you over until the end of winter, or until the ground thaws enough for digging, this print should do it.
If you need to further customize or modify this, I would instead recommend starting with the parametric downspout adapter found here.
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Enjoy your spout and let me know, if you make one for yourself!
The author remixed this model.
Adds a 4" flex drain side port.