On Mon, 10 May 2010 16:51:06 -0700, William Sommerwerck wrote:
The problem is that fairly high temperatures are needed,
well above what a lighter or hair dryer put out. Lighters,
in particular, will burn the tubing before shrinking it.

If you need more heat than what a blow dryer will do,
the HS is defective.

Not likely. A hair dryer hot enough to fully shrink tubing would probably
burn your scalp.

Maybe HS has has changed recently or perhaps blow dryers are wimpier
now being designed for people too stupid to hold it at a reasonable
distance.
I only use the stuff occasionally and haven't in about 7 years.
Previously, I never had any trouble using a blow dryer.