The last steps was to get a roof on the shelter and som nice benches inside.
The logs and boards are sanded with a grinder and sanding disc. Then it is oiled with timber oil. This i a mix of tar, linseed oil and turpentine. The timber oil is permeable. So the timber will continue to breathe and dry out moisture from the log as well as keeping the rain out. The logs don’t have to be dry to apply the timber oil.
To cut the boards I use my improvised Alaskan chain saw mill.