Thank you
I am not sure what wood is the scale. It was some scrap wood in the shed. It looked like treated pine from B&Q, very old and soft.
The grinding to shape the file took a while - maybe a couple of hours. Once the blade and edge was shaped, it was then all very quick process.
The DC4 did excellent job for fine sharpening. I feel I am getting to know using the DC4 with maximum efficiency lately. When I first bought the DC4, I did not how to use it properly, and was almost going to sell it, glad I didn't.
I will do some testing with the blade when time permits - whittling hard wood for an hour, making kindling by battoning, throwing it to the logs and ground, and even some light leveraging, and see how it will hold up. I will then do some paper cut test, and see how easy and fast to resharpen to the original sharpness. Should be good fun