Quote Originally Posted by Rajagra View Post
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Is this widely accepted as what we mean when we talk about THE thumb pad test?
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Good eye. For me and every barber I've ever known, the TPT is done by using your thumb or any finger pad (moistened or dry) drawn along the edge; not across it as in the wiki. The '61 barber manual also says "along the edge", not across it. Just touching the edge using no noticeable movement at all will feel "sticky" if the edge is extremely sharp.

All the knife and wood tool honers that I know also draw the pad along the edge, not across it, as a sharpness test. As does Heavydutysg135 in his excellent TPT posts and videos.

Drawing the pad across the edge is only useful to me if it is in the same plane as the blades major surface. i.e. a burr test.