I had enought his dull peeler for a little while. It hasn’t been sharp since the first day I bought it. I finally decided to but another one. The new one is sharp. I gentle slide the new peeler on the surface of an apple. The peel just separate from the pulp without much effort. The two peelers have different styles and blade coating. I was curious about why the new peeler worked so well while the old not so well.
I looked them under my stereo microscope. The width of the edge of the sharp peeler (~30 uM) was only 1/3 of the dull peeler. The dull peeler seems to have a flat surface on the edge (~100 uM). The thick and flat surface is the reason that my old peeler would not peel smoothly.
The picture was taken with Tucsen Microscope Camera from the eyepiece of Ample Scientific SMPlus_24 stereo microscope.
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