Originally Posted by Rob In AL
I used a lighter as the heat source since I don't have a hot air gun. The white didn't stay white for long despite trying to be really careful and waving it through the flame. Also, I was used pieces that were about 1/2 an inch long so there wasn't much room to write once it shrunk.
When shrinking with a lighter put the shrink tubing in the blue part of the flame. The white / yellow part will burn the shrink tubing.