Chasing Ghosts: The effect of edge aggression between steels.

[horzuff]

Depth of cut could be good when every variable but the steel was the exact same. Aggression is only at the very edge, so every other parameter would need to be the same.

Assuming it would be possible to achieve exactly the same finish on different materials (not just using the same abrasives but achieving the same roughness as well) as different finish could introduce drag to the cut influencing it's depth.

Similarly with geometry - differences in edge or grind could cause the blade to have more/less drag and cutting shallower/deeper.

Also I imagine measuring depth of cut is harder than weight behind the blade

[Stuart Ackerman]

Geometry decides ease of cutting...

Steel type AND HT decides length of cutting time...

Micro-serrations type and size decides the aggression...

Imagine a serrated cast dendritic blade...

[Bolster]

Geometry decides ease of cutting...

Steel type AND HT decides length of cutting time...

Micro-serrations type and size decides the aggression...

Imagine a serrated cast dendritic blade...

Geometry to be held constant.
Steel type is the manipulated variable so of course it would vary.
Heat Treat, if manipulated, would vastly increase complexity...next best option is to hold "quasi constant" with a standard HT for a particular steel.
Microserrations, with sharpening grit/stone held constant, would be an effect of the steel, so not a separate variable to hold constant.

I think it's a doable research project. Time intensive and expensive, though.

[electro-static]

Thanks for posting Shawn, I appreciate you using your considerable talents to try and take aggression out of the world of anecdotes and into the quantitive realm!

[Fireman]

Gives new meaning to “Ghosting”