Originally Posted by
gssixgun
Like all the tests the TNT needs calibration to your own body, it is a judgment call not some absolute, it seems that is the hardest aspect for people to understand with many of the tests..
There are several tests for the Bevel set, the more you can use effectively the better off you are
TNT
TPT
AHT
Magnification
You have to be able to at least have one of these that is fool proof for you, it really doesn't matter what John Doe on the Forum says works for him you have to test it and verify it all for yourself..
Read what Jimmy wrote again, see how he uses two of the tests to confirm his edge ???
Also note the part from a few people about using the TNT then doing a few more passes to bring back the fine edge, keep in mind that the TNT can serve two purposes, much like Eucclid noted about Jointing (Killing the edge) on the corner of a stone to even out small chips the TNT does this to the edge on a lesser scale and can help you get to a much smoother edge...
Good luck