But - to press the question I asked originally - is there a weaving mill using treated wool yarn?

Untreated wool will felt if subjected to heat, warmth and agitation - treated wool resists all three.

I have been using treated wool for knitting for a long time, it is not a new process, though the original yarns had a very strange feel to them, and an odd smell too. Jerseys can be machine washed again and again without any alteration in their size or appearance.

That is woolen spun yarn too - the worsted spun yarn used for weaving tartans is less inclined to felt simply due to the greater alignment of the fibres within the cloth, but it would certainly make washing kilts less nerve wracking if they were shrink resistant.

Anne the Pleater :ootd: