Glue Gun Cont. : Apply hot glue in excess over the damaged area and then slide the heat shrink over that area.

Glue Stick Cont. : Without applying any hot glue, slide the heath shrink over the damaged area of the cord.

Feel free to be generous with the glue. Most effective repair will occur when the heat shrink is near-full of glue for either option.

Be careful with the glue gun, temperatures get hot enough to burn skin.