Duplo Train Compatible Action Bricks for Locomotive with inverted symbols

Inverted Symbols for easier printing. No supports needed.

I used two color changes, because I wanted most of the brick in the same color. With a MMU you could also just paint the symbol…

Yes I know, the color in the picture is grey, but it should be white. The nozzle was not as clean as expected. I don't know yet, if it works. I was surprised because I sure did not print any other color then white before.

As seen in the original model, with the right color, you can make it work.