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Cornelius, when you do the TPT it shouldn't cut you. Touch the blade very lightly and if it is sharp it will grab the skin. If it is dull your thumb pad will slide along as if it were on ice. The...

Looking at the photos it is hard to tell but it appears to me that the edge has a slight frown beginning in the last third going towards the heel. Not quite a frown but a tendency in that direction....