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Walnut is a good choice for anything that will come in contact with food. However, the oils in walnut are irritants, so wear a mask. At least use a fan to keep the dust going away from you. Walnut was my favorite when I was a knifemaker, but it would tear up my sinuses for days. I used walnut oil for food finishes, and occasionally I "hot buffed" the knife hndle with carnuba wax.
The Only Knot You Need to Know.
Video inside would keep you motivated. Maybe wireless vid panels on the inside ring? Take a virtual hike on the AT.