Cheers Pete, a brilliant guide this. Not only for the technique but also for the pointers towards the right kit too.
I got a couple of Japanese water stones for my birthday this year and I've now had a bit of practice with them, using my Helle Wind. The knife gets some good use in the field but a short session with the waterstones has it scary sharp again; good enough that it will take the hairs off my arm!
ATB
Paul