I decided that I would use acrylic inks to colour the Evolon with and sprayed water onto the fibre to dampen the surface.
I did cut some samples from the sheet of Evolon that I had painted and subjected it to the heat gun but with very limited results. In fact, the fabric barely altered at all. I would like to have a play with it with a soldering iron as we did find it was possible to cut out shapes with it but unfortunately I forgot to take a photo of the tiny bit we did. Oops!
Obviously I have barely scratched the surface of possibilities with this fibre and when I get chance I will experiment further.
Footnote: I have just Googled Evolon in images and have been linked to Carol Clasper who has blogged about her own experiments with Evolon last year in a much more extensive way than mine. If you click the highlight of her name you can read all about it.