09-25-2018, 11:33 PM
(09-25-2018, 08:29 PM)grepper Wrote:(09-16-2018, 05:48 PM)KnifeGrinders Wrote: As to yours "I don't really know if my edges are burr-free or not (that's the reason I started this exercise)" - we are in the same position, and gradually improve our de-burring technique as we better our burr detection. We are dealing with micro-burrs that cannot be seen or palpated, and my USB microscope can't see them either. Till recently, real cutting was the only way to reveal those burrs - but as this thread goes on we get methods to reveal them, first in mainstream and now in higher-end knives.
I suspect that the micro-burrs can be visualized with a USB microscope but the lighting has to be correct. Maybe this would work: Make sure the burr is facing up and turn off internal top light in the microscope. Take a flashlight and start by holding it about a foot away from the blade illuminating the blade from the side. Experiment with every possible angle from from very shallow to steeper angles, closer and farther away from the blade.
It is surprising how drastically the angle of light will change what is seen in the scope.
How do you orient the microscope; i.e., do you change the angle on that as well, or keep it fixed (and if fixed, then above the edge or to one side)?