TLL90S Digital Protractor & the KME

uilleann

uilleann

Joined
Nov 20, 2016
Messages
144
(posted same in FB Edge Snobs)

SO I got the TLL90S. Its a version of the Angle Cube but this one gets accuracies of + or - .005 degrees below 20 degrees angles. And .01 degrees above that. Pretty good compared to the Cube which is .2 degrees accuracy. But does any of that matter. I did a video showing how I use the KME, Cube and TLL90S below. My conclusion is that there are too many variables between the KME and knife shape to get too excited about the .005 degree accuracy. But having said that I will use the new device and build a false sense of price in my 18.005 degree edge. ;-)

 
I have found that unless I really want to know what angle I am sharpening a particular knife on then my cube just sits in my kit. Mostly I use the sharpie method and that is all I worry with. Your video is nice though
 
Definitely unnecessary on the KME. Cube is more than adequate.
 
It seems like you are exceeding the ability of the KME system. Kind-of like putting a really good scope on a BB gun- it's just not that accurate! I think you'd be happier with a Wicked Edge with the ball joint arms, and probably the Gen.2 clamp (the one you screw in, not the newest one). You can be really precise and not have the slop due to the other moving parts.
 
Of course, none of that matters.

None of the components used (vice, KME, knife) are likely built to those accuracies or tolerances. And that you're using your eyes to assume components are 'flush' or 'perpendicular'.

"... a false sense of price ..."
Freudian typo? ;)
 
I love my KME and I use the sharpie. I have a cube but yes blade shape (example: Hinderer spanto) changes it up. KME would say 22* and cube would say 20*. Shrug. Close enough for me I guess on thick blades.
 
Never go by the markings on the KME. To many factors for it to be true. The cube will tell you the actual angle every time.
 
Reasons that the knife may not behave the same way as the steel rule when clamped in the KME:
- The flats may not be machined to the same tolerances - ie. not completely flat
- Distal taper is causing the knife to skew when the clamp is tightened.
 
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