Validity of manila rope edge retention testing

[grepper]

Folks seem to go for rope or cardboard but there are other options that would be more consistent in thickness and composition.  How bout something like 24lb or 80lb card stock or layers of it?  With something like that the media would be more consistent, predictable and wouldn't have the fraying and other issues inherent with rope.

It would sure seem to me that to obtain any useful information consistent test parameters between tests would be required.  For instance, when comparing two different blades:

• Consistent  media
  
• Same initial sharpness
  
• Same bevel angle
  
• Same number of cuts
  
• Same pressure applied
  

I've always thought edge retention testing is a tough row to hoe because there are so many variables.  That said, with sufficiently controlled test parameters it might be possible to have some confidence in the results.  To me at least, the only thing those Youtubers out there whacking of hunks of rope against a cutting board are accomplishing is wasting rope.