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