[Don Moyer]

Surcouf,

The threads on the plugs used in Lock-n-stitch repairs are tapered and shaped such that (as they are tightened) they pull the crack together. The shape of the threads was described to us by Lock-n-stitch technical support folks as being like the cross section of a wave on the ocean just before it crests. During the repair, each new plug also overlaps the previous plug slightly so the shape of the threads also pulls the repair itself tight as it progresses. Don