Duplo and Hubelino compatible marble run parts

There are already a couple of good models for LEGO duplo compatible marble run parts. Most of them didn't work for me so I designed my own. The marble cut out is the same as for the Hubelino parts (commercial marble run parts) so they can be used together without any problem.

I recommend a brim for the bridge, especially for the small part. It has been kicked off the print bed for me once due to the small contact area. If an additional model with an added brim is necessary, please let me kno