What I've settled on is this: To begin with I use a fairly low setting. Then I use a fairly high setting. My finish is with the lowest setting which will cut ATG on my upper lip.
After years of trial and error, this is also what I’ve settled on. It may not be the “correct” way to use an adjustable (yes it is), but it’s definitely the most effective way I’ve found to use one.
I start a little higher, maybe 3-3.5, but overall I agree that this is the way to use an adjustable.
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