These are the cables that I use:
https://www.amazon.de/gp/product/B0778FV6K4/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&th=1
Added a minimum amount of support material in the GCODE files. Printed fine like this and it just snaps together, no glue needed. Thanks to the original creator for this funny gadget :D
The author remixed this model.