Why are burrs so malleable?

[Bud]

I've been reading your posts Jan for several months now and I think that there is not very much that you don't understand. I don't know where you are from, I doubt that it is Mars, but I would like to understand what Mark is saying better too. I'm a long way from where you guys are skills wise so i guess that I feel like an alien most of the time too. Burrs are a problem for me and any help, especially from someone like Mark would be very much appreciated.