A Toothy Edge on hair Shears?

What effect does a toothy edge have on salon quality shears?
Experiment in varying flat hone grit and increasing the toothiness of the hair shear edge has some advantage but also disadvantage to the hair shear performance.
End result is a courser or toothy edge on a hair shear can hold the hair better but it causes the the blades to wear faster and could even shorten the time period between sharpening.
I forgot to mention that stylist reporting folding of hair on the blade is usually caused by incorrect tension or set in the blade. Shears use in this analysis had both the correct tension and proper set.

[@BonikaShears]

Good experiment and analysis. I would like to see the experiment repeated but with only the one blade, the finger rest blade sharpened in this toothy progression and possibly a 40 degree angle and the thumb blade 45 or 50 depending on the quality. We are experimenting now with some tricky edgework on a new shear, but we have to be sure sharpeners know how to keep the edge design. Keep up the experiments. Your analysis of the edge and the results are invaluable.

[@prairieedgeservice]

Hi Bonnie, Thanks. Your Bonika Ocean shear design was one of the elements that went into my research to consider this experiment. What this told me is that no matter what the steel, an aggressive edge approach will affect the longevity of the shear to retain the edge when the edge is fine like 40+ degrees. The different quality of steel just determined how fast the edge deteriorated. It was nice having a variety in shear quality which were all sharpened at the same day as part of this evaluation. Also I have been using a 2000 grit wetstone for the rideline, like you. After seeing how the inside edge became glossy smooth from the wear, I am now adding a 5000 grit whetstone to the rideline polishing process. A 2000 grit rideline may be a contributing factor to a faster inside edge deterioration and feel of the shear. That might be a later discussion.