Paper Cylinder Lock.
One of the projects from my book “The Paper Locksmith”⠀⠀⠀⠀⠀⠀⠀⠀⠀
#lock #combinationlock #locksmith #locksport #cryptex #maker #makerEd #STEM #STEMEducation⠀⠀⠀⠀⠀⠀⠀⠀⠀
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