Switched from shrink wrapping to plastic sleeves when we bought the shop, but a fella's come in who wants it done. It's been years since I did one, and can't recall what temp to set the wire. It's an old United, with a dial that goes up to 10. Can call tomorrow, but does anyone know? Whoever used it last must have had it way too hot, as the wire burned right through the Teflon tape.