Lego Duplo Train Battery Cover

thingiverse

One of my sons' Duplo trains had a faulty battery cover. I used measurements from the opening on that train and a similar one to create a new design for the cover. To make it printable without supports, I tweaked some details. The two small tabs have built-in supports that need to be removed after printing. After a little post-processing with a needle file, it fits perfectly. The model's units are in millimeters.