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This is the test in question.

As a new shaver you can expect your face to react a little to the agressive edge on the straight. It will take a half dozen shaves or so for your face to adjust.
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You can use the HHT to test the progress of the razor from 4k to 8k through 12k, but that will just be so that you can see how the hair reacts to an edge which is not sharp enough or wire edged. I...