How to make Marble Run with escalator out of cardboard

Marble Run with escalator from Cardboard own hands
Science Projects | Escalator Working Model
Marble Run with escalator from Cardboard own hands How to make Marble Run from Cardboard MARBLE RUN
Materials:
cardboard, hot glue, wooden skewers, pet sheet, marbles balls.
#Scienceprojects #Escalatormodel #Workingmodel

[@Paperscraftandmore]

Can you give me the size of all parts i can’t see it

[@Ichwillkeinenaliascheisyoutube]

i HAVE TO build my own , but my brain always switches to ""oh , a beautiful butterfly..."" , every time i try to begin... 🙂