Marble run building kit for skewer (diameter 2.3mm)

I used the ball with the original concept: https://www.prusaprinters.org/prints/29157-filament-roller-coaster?fbclid=IwAR3wbowTbIOajH4YqPR8aPSwd9anE55SvTdMrszwaFO8i8b6tc6pDK7dAjw#_ga=2.157730610.966633646.1588874910-1314967637.1573004137

Print instructions

Print with option:
nozzle: 0.4mm
Layer height: 0.2mm, for "spojka filamentu" 0.1mm
I recommend support for "start_marble_run"