TSPROF KO3 or KO4?

[Gottagofishn]

Ii

To test the edge, to move the knife to a microscope/magnifier, to safely store the knife if you need to pause in the sharpening, to strop backside if doing a single bevel knife, etc. These may not be things that come up all the time for everyone but I think it's a cool feature. I'm not sure if the K4 has a chisel adapter/holder but it would be especially nice to be able to deburr the back side of a chisel and repeatably return it to the jig.

I test every blade with a Bess tester. Rarely, but sometimes I examine the apex under a microscope. I would need a sharpener with a removable arm.
I am on the market for something like a KO4.

 

[777 Edge]

Ii

I test every blade with a Bess tester. Rarely, but sometimes I examine the apex under a microscope. I would need a sharpener with a removable arm.
I am on the market for something like a KO4.

Most of the Kazak systems also have a removable clamp bar.

 

[Rob Babcock]

Ii

I test every blade with a Bess tester. Rarely, but sometimes I examine the apex under a microscope. I would need a sharpener with a removable arm.
I am on the market for something like a KO4.

I'd love to have the K4! But my Edge Pro Professional uses a table instead of a clamp which offers the same benefit.

 

[Diemaker]

Fixed tables are inherently stiffer than rotating clamps, and have the edge in quality of end product. The two types have their strengths and limitations, which don't overlap much, so you need one of each to cover the gamut. Fixed tables need a flat surface to reference, so convex or hollow grinds can be a problem. Rotating clamps have so many connections in the system that they can't hold the blade as rigidly. The clamps themselves are a whole other topic.