Jinna - the little dog began to run fast! We are very happy! And I'm grateful that Rickee (and Veronica?) shared his project.
I just want to note that there was a problem with the "B_angeld" file. The belt does not hold well in this place.
And I also used PVC pipes for water. Their diameter is 20mm. I increased all the items proportionally by 8-10%. And also increased the lower holes due to the shrinkage of my plastic. It was a painstaking job!
Thanks! Thanks! Thanks!