Cardboard Ratchet Mechanism (One Hand Operation)
Channel: bornach
Date: 26/01/2020

I made a mock-up of a ratchet mechanism out of cardboard to test out an idea. After posting a clip to Twitter, people expressed interest in instructions on how to make it. This video is a quick summary of the steps for making the 2nd version of the handheld cardboard ratchet which you can turn one step at a time like a fidget non-spinner.


You might want to incorporate these instructions as part of a S.T.E.M education class that introduces ratchet mechanisms and explores their many uses.