Revisiting a topic that came up in a different thread. I wanted to know how to tell a dull cutter from a sharp one. I tried a few ways to feel the difference, but I don’t have much confidence in any of them.
@RichCournoyer mentioned that he uses a jeweler’s loupe to check his. I happen to have a Supereyes B005 1 ~ 200X Handheld USB Digital Microscope, so I figured I’d look at them through that.
Here’s a cutter that was diagnosed in this forum as likely being dull:
EDIT: POSTED CORRECT VIDEO
And here’s one that I just received, brand new, from C3D:
I think I can see a difference, but I’m not totally sure. What should I be looking for?