[HNW] wool cap refuses to felt

[Speaker To Idiots]

> I made a knitted cap to go with my Privateer costume (we're not pirates - we 
> have our Letter of Marque...).  It's wool, and it should have felted when put 
> into boiling water or into the hot dryer.  But all it does in water is 
> release quantities of dye, and all it does in the dryer is to get dry.  Yes, 
> I've tested it, and it's really wool.  Any advice?
>
>       CarolynKayta Barrows

What kind of yarn did you use? Because it sounds like Superwash, which 
means it's been treated to not shrink or felt.

Margaret/Pixel