At least now I know what the hardest part is....Grinding the blade to an even thickness at the edge
https://farm3.staticflickr.com/2893/...3a0ae3e7f7.jpg
Here I have set the bevel with a fairly coarse diamond stone. There is probably a difference of 0.1mm between the thickest and thinnest part of the blade but, as you can see this has a huge impact on the width of the bevel. When I say huge it's of course all relative.
This is after setting the bevel and going back to the grinder to try and even things out for a good few hours! I am beginning to doubt my ability to do this :(