[sdiy] Heat shrink tubing driving me crazy....

[jays at aracnet.com]

Are you sure it is really heat shrink?

There are a lot of products that look like heat shrink but aren't. If you bought it from some sort of store or online maybe they sold you the wrong stuff.

Most "magnet wire" in transformers is coated with some form "enamel" insulation. Usually a dark redish brown in color.

Jay S.
Tom Adam wrote:

> I've got this heatshrink recently that just doesn't shrink. I admit I 
> don't have a heat gun or other proper tool, so I use my soldering iron 
> as heat source. But this tubing wont even shrink when doing the 
> "lighter" trick.
> Anyway this got me thinking, some time ago I was having problems with a 
> +/-15V toroid transfo and it turned out the wires where coated with 
> something. After scratching the surface the transfo worked perfectly. So 
> does this coating stuff exists as a spray or something alike? Would 
> solve my problem perfectly. It's probably a very nasty chemical product, 
> but I can't imagine that the fumes from burning heat shrink is healthy 
> too...
> 
> Cheers,
> ToAd
> 
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