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Heat-shrink Tubing

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This stuff is great. It replaces electrical tape in most applications. The only disadvantage is you often can't put it on the middle of a wire when there is something already on the end. There's even waterproof heat shrink with heat-activated adhesive, but I've never used it so I don't know how well it works.

  • Use the smallest tubing which will fit easily over the connection.
  • Don't forget to put the heat shrink on the wire before any connectors.
  • Buy lots of it. I mean a hundred feet each of different sizes. Don't buy the little variety packs that cost $3 and give you a couple of feet, because you'll primarily use one or two sizes and run out. Buy spools from Mouser or Digi-Key. It's cheap.
  • Use a heat gun. Not a lighter or soldering iron.
  • If the heat gun only has HIGH and LOW settings, use LOW unless you're very careful. It's not a hair dryer - HIGH is for destroying things.
  • Don't use clear heat shrink. It looks like an uninsulated connection.