First I went through the kitchen and looked through all the kitchen knives, I thought that the knife we use the most would be dull as it isn't cutting as well as before. That sliced through the paper, so I went through knife after knife cutting paper until I decided to get some of my mora knives and then I remembered that the knife marked in the picture is one I've never sharpened.
I got the knife from a drawer filled with old rusted knives that my father had rescued a long time ago. I had removed all the rust but it had much pitting in the blade and the edge was gone. I guess I just put it in my toolbox and used other knives.
I'm going to use synthetic water stones to sharpen the knife.
Without a cutting edge it was very difficult to even cut the paper at all.
With the result of cutting the paper I decided start on a even coarser grit stone.
A few minutes later... many mores minutes later...
I would have taken more pictures but I guess I was in the zone.
Cutting paper easily.
The knife has an edge again after many years without one.
There is still some small pitting left but I guess it will be gone next time I sharpen it.
I used the diamond plate to flatten the stones and remove filings, so my stones are ready for the next tool.
I have to agree with the man in the video that dulled edged tools are more dangerous to use. If I have to add a lot of force when using an edged tool, I stop for a moment and think
perhaps I should
sharpen or use a another tool instead.
If I know I'm not going to use or store a tool for a long time I usually wipe it down with linseed oil(boiled or raw) so it will not rust easily.
Now I have another slöjd knife which I can use for the rest of my life.