If you don't have a heatgun, READ THIS!!!

[Flaminpyro]

When I have shrunk tubing in the past with a soldering iron I found it best to hold the iron under the tubing so the heat could rise to do the shrinking.
Comming into contact with the tubing is not a good idea.
I have a heat shrink gun but find it's too cumbersom for these small 1.5mm shrink tubes so I just use a micro torch and hold the flame back far enough to shrink but not burn. practice practice practice

 

[Kevlar]

The first time I used heatshink tubing, I tried my wife's hairdryer but it didn't work. I was also worried I'd damage the diode with too much heat.

Like DTR and FP, I use a micro-torch and just hold it a few inches away, then move in slowly.

 

[chipdouglas]

You need to use the cooler part of the iron to make contact with the tubing.

this is what i do in sweeping motions never going still.


michael.