Thread: Bevel on SRP LE razor (TI)

Originally Posted by PA23-250

My only thought is I still have a double bevel. Except the positive sharpie test... Anyone had this problem?

Yes. The sharpie test, like nearly all other tests, isn't infallible. It merely test for secondary bevels and warped blades. What it fails to detect is the case where there is only one bevel, and it goes all the way to the edge, but the edge is simply too thick - i.e. instead of being 0.3 microns across the edge, it's much larger, like maybe 1 micron or maybe even tens of microns. You could detect this situation if you could examine the edge end-on, but that's awfully tough to do without some specialty fixtures and significant risk to the lenses.