Heat shrink tubing used in connectors typically shrink at temps between 212 -275 degrees. Hot air type guns work fine.Also, I make bulletproof (bluefish) sliders by cutting a small piece (the 212 degree type) and slipping it over the foam body and tossing it in boiling water. The polyolefin used in the shrink tubing has a low density and won't sink the fly and is easier than coating with epoxy. Hot air guns get too hot and tend to singe the bucktail or flash material. It comes in clear and other colors. I added this because I know you are a fly tyer.
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