make your own gearbox from used cardboard

make your own gearbox from used cardboard easily at home, from gears that are no longer used, you can make your own gearbox and use used cardboard as a substitute for plastic or metal for the gearbox walls.
how to make a gearbox is very easy, you just need to provide at least two gears of plastic or metal and enough used cardboardcut the cardboard pieces in such a way as to fit the area of ​​the diameter, for the AS using a used drinking straw gearbox back and forth.

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Good job